I have not been able to find any bench rest competitions in my area so I'm unable to observe and learn that way. On Youtube, I've seen the beautiful stainless rifle rests and when the gun fires, it slides back on both bags. What kind of bags does this require that allow that movement? I've got a Caldwell BR front rest and a rabbit ear Protector rear bag. After my gun fires, and I move it back, it always goes to a completely different place and I have to adjust everything all over again???? Please recommend a rifle rest, a top mount and bag and a rear bag that will allow the 'sliding' action.