I am planning on getting a Trophy Taker Shakey Hunter rest. I would get a prong style rest, but I can't find any around here. I would have to order off the internet and get stuck with shipping. I can't get my bheads to group at all. They shoot all over. Here are my groups: bh 1 hits 4" left. It always hits within 2 inches of the last shot. bh 2 hits 5" high. It always hits within 2 inches of the last shot with that bh. bh 3. hits 7" high and 2" left. It also hits the within 2 inches everytime. For example bh 3 would hit 7" high and 2" left on the first shot, but on the second it would hit 8" high and 2" left. I get good groups with individual arrows.
My question is would I notice a differenct using helical vanes? I would need to get a drop away rest since my prong rest isn't adjustable. What should I do?