and I tested it yesterday afternoon.
The poster in the linked thread is NOT me. I just copied his instructions.
It is similar to the trophyline tree saddle, in how it works in the tree, but it's a hard seat instead of their method.
I used a boat ratchet strap from Gander Mountain, because it's on my way home, $10.
1 climbing rated Carabiner bought at an outdoors store that specializes in climbing gear, $5.50.
1 Sheet of 3/4" plywood, $22. there's enough wood to make 4-6 of these seats depending on how you plan your cuts.
20' of kernmantle static line from the previously mentioned climbing store @ $.97/foot. Don't really need that much rope but I'm experimenting with a couple of different hitches to the tree right now.
Results are excellent. I will climb to hunting height using 4 Gorilla brand strap on climbing sticks. I've only tested the setup with ONE so far for safety purposes and to practice hooking the set up to the tree.
I also add for additional safety a lineman's strap attached to my HSS vest with 2 of the previously mentioned carabiners and hook the vest's strap to the anchor line with one of those carabiners when I get to set height.
As noted in the linked thread I attached the seat's straps to the plywood using screws with washers. 4 in each strap and it is very secure.
For the adventurous tree hunter who doesn't want to spend $200 + on the tree saddle I highly recommend giving this set up a try.
I will try and get some pictures of my setup this weekend, but it looks exactly like the one linked here. My total investment for new purchased items in this set up is less than $60.
This is how the seat is connected to the tree. I use a climbing rated 10mm static line with a carabiner and an 8mm prusik loop attached to the seat by another carabiner.
This is how the "tongue" on the seat rests against the tree. Quite comfortable.
View down the tree. I use the top rung on my climbing sticks to rest my feet on or push away from the tree to stand. I can cover around 320 degrees easily by pushing off to the side with only one foot.
The seat is very secure at height, I'm confident in the safety of it, even if I feel asleep I wouldn't fall out of the tree because I loop my linemans belt around the straps of the seat when I'm done climbing.
I sat in the seat for 3.5 hours Saturday and was very comfortable the entire time.