I'm not very flexible and sqatting is difficult for me. A squat strap helps.
This strap (hard to see in photo) is a 6' piece of 1/2" nylon webbing with a 5/8" quick release buckle. I already carry it for other uses so it is multiple use.
It goes around me and the tree and allows me to squat without holding the tree.
Humming the song, Wichita Lineman, adds to the experience.