I need some ideas for a rest. It has to be under twenty pounds, very steady, and will work with a flat bottem stock. Bipods are out because there is no place to mount it to the rifle. It really does not matter the position it has to be shot, just portable and steady. I thought of a camera tripod and making a plate to put sandbags but that probably would not be tough enough, nor stable enough. Any and all suggestions please.