In reply to how I made mine.......basically I just 1/2" square tubing, drilled 1/4" holes and used bolts and plastic washers at the joint(so they don't squeak) on the bow holder end I drilled another horizontal hole and put a 4" bolt through that and put shrink tubing over that so it didn't make any noise and scratch the bow. On the end that goes into the tree I just boughtextra large screwsand cut the heads off. then I slid the bolt in about an inch and welded it in place. Primed and painted.....I also took some fairly heavey wire and wrapped it near the base leaveing a hook on each side for hanging a grunt call and rangefinder.

Good Luck!