Are you ready for this? - MAGNETS. I have a pouch with the pack and one without. I didn't know how "crowded" it was going to be, and with a boat load of kids there, I didn't want to "bump" them because I couldn't see them. Been there and done that....
I put a 25lb pull magnet on the inside of the front chest plate, then another 25lb pull magnet INSIDE the ammo pouch. That baby isn't going anywhere. A nice little trick if you have to go packless and still want to wear the pouch without straps showing or hanging out...