I set up one of these targets in my back yard and shot 3 arrows into it with my new GT500 ninja. I'm shooting a 70 lb bow with 28" arrows. I shot the target at about 18 yards. I got about 11-12" of penetration. The problem I'm having is I can't pull the arrows back out. I checked thier web site and it showed some guy pulling an arrow out with 2 fingers. I had the thing on the floor standing on top of it trying to pull the arrow out. I was afraid I was going to hurt myself. Is there a trick and don't say grab and pull because that didn't work. Please help.