DIY Sportsman has some great videos. I built a few of his camera holders and two of the bow holders. They do work but if you hang it by the cam of the bow it can make some noise on the thread bolts despite the rubberized coating.
I use a strap on cleat, some use them to actually climb up a tree, I use em for an awesome bow holder as it has gripping groves to help secure the bow or backpack and doesn't harm the tree like screw-ins. Very light weight, cheap and legal....goes on in a mere seconds