hehe, i never used anything to hold the springs in my thirdgens back. i jsut tell everyoen to move and lower the jack. i haven't been hit yet, i don't think my neighbors cat will ever be the same, but there haven't been any human injuries
realistically the springs in thirdgens sit so high in teh pocket and are sooooo freaking long that if you manage to shoot one you have really accomplished something.
later
tim