if the river is slow build a dam. if the rivers fast, build a dam lol. that's what youd think is the bazooka modo from everything you read on bazooka. build a dam and run it fast and steep, classify less shovel more and get it so it clears the rocks off the top. I have the 24 inch sniper and the mini. ill never go back to a regular Mat and riffle sluice. I can't wait to get the prospector. the mini and super mini are great for low flow and sampling. but the super mini I figure might as well spend the extra 30 bucks and get the 24 inch sniper and have a bigger trap. it works well in low flow areas to. but it needs more water than the minis. I live in Utah and we have tons of small gold here that ranges from 20 to 300 mesh. and I can say that the bazooka dominants a standard sluice. the fine gold recovery is amazing I've caught almost more in the couple times I've got to use my bazookas this year than I did last year using a keene