Its weird that both big gold trap companies went outta business. I still have my bazooka sniper but I havent used it in ages. Maybe this summer I'll dust it off.
Last few times I was having problems with it. I had dirty water flow from people digging upstream, pieces of leaves clogging the tubes and blocking stuff. Next thing you know the tubes are jam packed with silt from the water and chunks of crap and your gold is washing straight out the sluice.
It must have clogged up 6 or 7 times that day and I was cursing it. Since then I've only used my Angus sluices and never had one problem.
It's a good system as long as the water is clean, deep and fast.