Well Bullet Maker, I did have an interesting time.
I can add two things about the cookout:
First, I had been hearing things moving around in those woods all the time we were there, but it was always just a rustling of leaves. Sounded like maybe a deer came through, and then the coons, possums, and armadillos. Every now and then, I heard what I thought was a footstep, a single 'crunch' of leaves, but they were very intermittent. I could see the edge of the field and a good 50 feet into the forest, but I never saw anything where I would hear those crunches coming from.
Second, we had put camera traps around the field at key locations. Some of these were on trees, while others were just leaning against the bases of trees, and partially hidden by bark. All of the cameras were positioned to watch the primary entrances and egresses from the field. None of the digital cameras got anything. We had a color flash digital camera, but it somehow reflected light internally and ghosted out every picture. We had a color flash film camera (the same one that got the picture in November 2009), but the roll of film has not been finished yet. #53 collected the cameras that night, and discovered for himself just how bright and noticeable they can be. We had several Wildview cameras, and they all start blinking whenever they start getting hits on the motion sensors.
WednesdayI arrived at Bullet Maker's place on Wednesday night, and borrowed one of his Wildgame cameras to set a camera trap for any potential visitors. The area of the cabin and placement of the cameras are detailed in this diagram:

That night, there was a light breeze that would occasionally cause the cabin to creak a little, so I'm not positive if something was tapping on the siding, if it was the wind, or if some small animal was moving around. At about 2:00 AM, I heard something hit against the propane tanks on the side of the cabin (opposite the car and grill), then what sounded like something dragging a stick across the back, and then what sounded like the whooshing of something running along the other side (car side) of the cabin. So I smiled, because I figured the game camera got it. Well, it did, sort of.

It's just a speed blur. Some have questioned that it might be something blowing in the wind, and that the noises were also caused by things blowing in the wind, but the wind was not strong, or even mild. It was very light breezes, just enough to move the cabin a bit and make it creak.
ThursdaySo on Thursday, I positioned the camera against a log in the grass behind the cabin. Whatever had shown up that morning seemed to like the back, so I figured it might return to the same place. That day, #53 showed up, and we took a look around Bullet Maker's lands. We also recovered a second Wildgame camera, which I set under BM's old pool deck to watch the propane tank side of the cabin. While out and about, #53 showed me the sight of the UHS picture. That UHS was coming up from a rather steep gully. Not something to navigate during the day, and certainly not at night (with no moon). I know, we went down there that day. I almost broke a rock on my shin, and #53 took a tumble too.
That evening, at about 9:30 pm I closed the front door of the cabin, and within 5 minutes, something may have tested it with a slight push. It might also have just been the door relaxing in its frame (it is partially broken). At 10:00 pm I turned off all the lights and crawled into the cot. About 5 minutes later, I heard a metal 'gong' sound. I think this was an old stainless steel sink sitting near the grill, being inspected. Then I heard the deck creak. Then slowly, it creaked again, and slowly, again. Then something gave the rear door a good shove. The rear door does not work either, and I had it braced on the inside. Normally, the door would have opened about 6 inches before hitting a heavy table. I doubt any of the bipedal visitors would have entered the cabin, but I cannot say the same of the four legged variety. Whatever gave the door the shove then started tapping and scratching the door with its nails, at least, that's what it sounded like. As if to prove that it was some type of ape or primate, the visitor then gave me the raspberry (aka Bronx cheer) about a half dozen times over a minute. Then silence, but I never heard it creak off the deck. I fell promptly asleep. At about 2:00 am, I woke, and within a minute, something started tapping and scratching at the door, and a few more raspberries. This intermittently occurred for about 5 minutes, and then stopped. I went to sleep after about 15 minutes. At about 6:00 am, I woke for the final time. Again, after about 1 minute, something started scratching and knocking at the rear door and gave me the raspberry some more. And then it made almost a "finally" of knocks and scrapes. Not soft ones like it had done through the night, but very energetic ones. I then heard my visitor get off the deck, and hit the sink on its way out. I decided to get out of bed as well. After brushing my teeth, getting dressed, and putting on some water to make tea, I opened the front door at about 7:15 am. I walked around outside while brushing my hair. It was just beginning to lighten, and as I approached the rear of the cabin, I heard something run off in the woods (or move further back). Now, there are reports that I snore. I don't believe them, as I have never heard myself snore, but it is conceivable that my visitor was staying in close proximity to the cabin, and as I was waking up, it would hear changes in the sounds and reacted to them.
I couldn't wait to check the camera I left behind the cabin. The rear door was centered in its field of view. At 7:45 am, I discovered that the log had recently been slightly moved, and the camera had fallen on its back. When I checked the pictures, I discovered that the camera had fallen at about 7:15 am. While the camera had about 30 false triggers during the day, it did not take a single nighttime picture, not even by accident.
The other camera only had pictures of me. Interestingly, even though I only walked by it, those pictures also had noticeable motion blur.
FridayFriday was the cookout. I spent the day helping Bullet Maker set up his new game system so he could play Cabela's Dangerous Hunts, and listening to his own encounter stories and the tales of others from the area which he has collected. I also got to see some of his other possible bigfoot pictures. When #53 arrived, we went down to the bottoms to set up the cookout (and camera traps). I didn't get to see anything. We didn't hear any vocalizations or tree knocking either, although there seemed to be a few too many owls around. Nothing happened that night at the cabin either.
SaturdayRain. And then no rain. Bullet Maker took me around his upper lands. I was originally planning to sit in a deer stand, but when I got into the stand, I started hearing some turkeys on the other side of the gully. I then thought, "bigfoots eat turkeys, maybe I can sneak up on a bigfoot, sneaking up on the turkeys!" So I slowly made my way toward the turkeys. On my way, I discovered an area that had a lot of tree bends (near where the UHS photo was taken). I never got to the turkeys before they quieted down, but I did walk along the ridge above the gully. As I neared the end, I stepped to the edge of the gully to look over the farm fields, and made a sound on the leaves. Something down the gully immediately reacted and moved toward a location less visible from the top. I never got to see what it was. There was an illegally constructed fence between me and where I needed to be to look down on it, and I was not going to crawl through barbed wire. (The fence was erected by Bullet Maker's neighbors, but they unilaterally decided that they wanted some of BM's land for their cows, so they built the fence about 50 yards onto BM's land, along the ridge, instead of down in the lake/gully where it belonged.) I did take a seat in the stand, but never saw anything. Originally, #53 and some friends were planning to come up for a second cookout, but the rain and muddy conditions sent that plan to an early grave.
There was no activity around the cabin that night either.