Sounds like it would be a neat tourney format. Really would encourage movement and tactics over firepower. Not to mention introducing the element of having to shake the hopper every so often and you can't shoot too fast or chop chop chop. I'd actually try a tourney like this. Heck I'd buy a cheap tippman or something just to play a tourney like this. I might throw in a no pod packs rule though. i think a hopperball style tourney would be interesting. That and perhaps a must be bone stock rule too. That way you get no arms race with barrel kits and such. Heck why not make it everyone buys into the tourney by purchasing a stock Koas and a steelie plus a shake and shoot hopper.