I've been hunting out of box stands in Texas for years. For me, the best rest is a small sandbag over the rail. I'm not talking about a V bag, but something like the Caldwell universal elbow pad. It is about $15, and using the other hand, can be used to get a very steady shot. I can hit a coke can at 100 yards virtually every time. I have hit a milk bottle lid at 80, right in the middle.