I need help! I pratice with feild pionts from the ground and from the roof of my porch (approx 10' to 12'). Everything is dead on at 20 yards. I notice when I am on the roof shooting at 10 yards is a couple inches high.

When I'm in my climber I climb to 18'-20'. All my shots are going over the backs of the deer I'm shooting at. What the hell is going on? Can a few more feet in height make that big a difference?

I use fixed blade broadheads and a regular 4pin sight. HELP!