I built a 2'x4' 3/4" plywood table with overbuilt scrap lumber 2x6 legs and a heavy shelf to keep it stable. I mounted a bench vise on a 2x10x24" that can be clamped down when used. I mounted a carpenters vise on the front.
I just made a tiller tree out a 2x4 cut eye level. Bow sits on top with a quick clamp over it. 130# rated 3/4" screw eye in the 2x4 connected a 800# rated screw link connected to 125# pulley. 124# 1/4" rope with a figure 8 on a bight wrapped around the finger grooves of my scale. Two hand loops tied in the rope to make it easy to pull and hold.
For now I am clamping the tree to the table so that I am free to try it in different places.