In a single outing with high water and heavy rain, I was fortunate enough to pull out nearly as much gold as I did in seven or eight outings last season now that I'm using the  Bazooka Gold Trap 48" Miner sluice. Since this sluice eliminates the need to classify and can accommodate dirt & gravel straight from the shovel, I was able to process more material in 3 hours than I could have gone through in a two day outing! The grizzlies can be modified so only 1/4 or 1/8" heavies are captured - and I did modify mine by attaching some wire mesh over the grizzly section. The amount of stuff in the back of the rig is reduced as well. I recommend sampling after an hour in each hole so you can be certain you're working in a productive location. I've used several sluices in the past, with simple ribbed matting, goldhog matting, and expanded steel over miners moss. The matting was never the problem - it was the tedious and back-aching classification that slowed me down.

My next purchase will be one of their smaller models so I can travel light and fast down creeks and rivers sampling!

i am using a 3" highbanker with gold hog mats.

The a52 I use is circa 1980's at least... the riffles are rusted the expanded metal rusted, the carpet old and worn, no miners moss... works great!!!

I use a jobe 45' yellow jacket stream sluice but I had to buy legs for it to help setup.Maybe I am just inept lol. The beginning has slow water riffles and the bottom 3 are for faster water. Its really hard to get flow and angle right for both to be optimal. It is 4 inches deep which helps me judge the drop easier. A little more pitch than I see most recommend seems to do well on this model.