Will I did some experimenting today. I took a longer section of square tubing and drilled holes every inch to see what happens as you move the brackets closer or farther from the seat. My intention was to see if I could find a way for the cam action of the seat to be the only thing that holds the platform on the tree.
I wanted to find a way that would keep the top of the stick tight against the tree. I used 3/16 Amsteel as the rope with a brummels hitch on one side and a couple half hitches on the other side. Here was my first try. I was able to put a lot of pressure on the rope and the platform was rock solid
Since the lower portion directly affects how big the platform is when stored, I tried to move the lower bracket up. The higher I moved it, the more pressure was put on the lower bracket, and the top bracket began to separate from the tree. I took it apart to move the bracket back to the lowest position address trying the highest and noticed I had actually bent the bracket and flattened it out some. Unfortunately, I didn't get a picture of the bracket in this position.
Next I started to lower the top bracket. This had a much smaller effect on the stability of the platform than moving the bottom. Here is the last position I tried.
At that position, I wasn't able to see the top separate from the tree, and the pressure on the bottom wasn't such that the bracket was over stressed (I put a new bracket on)
I think these will be my final position
A couple of details. I have an extra spacer on the top boot that isn't needed. I didn't have a shorter bolt handy. There is a spacer between the leveling screw and the 1" tubing. This I feel is necessary to keep the screw travel to a minimum and also spread the load of that screw across more of the tubing.
The entire thing as shown with the extra spacer comes in just under 4 lbs. I will be cutting the extra tubing from the top as shown in the last picture and expect it to get even lighter. You probably noticed some of the webbing on the seat is missing. That is to accommodate my first attempt which was using a muddy stick and the rope cleat.
For what it's worth, that solution weighed 4.7 lbs but wasn't nearly as solid.
Sent from my SM-G900V using Tapatalk