This is just my opinion, but why does it seem like everyone is trying to reinvent the wheel? Purchase a keene, jobe, gold hog, proline, .....etc. get your a** out there and dig a crater!!! Stop wasting your precious time. Maybe i am wrong....
Well, we often make our own or modify existing equipment or manufactured due to the fact that when Keene, Proline, Jobe, and all the others, make "generic" models that are good for mostly alaska gold and course larger nuggets. We do this due to the fact that most the "stock" dredges and highbankers are not made to capture the finer flakes and specks.
As a gold-prospector(full-time, small-scale) there are thousands more flakes then nuggets, and when we make our own or modify existing equipment, for us that have the metal skills and understanding of what our machine (sluicebox, pump) is doing, why pay someone else to make a custom unit when we are full able to do it cheaper, more timely, and to our exact specs. I don't have full use of a metal shop, but do come from a background w/ millwrighting, machining, and mechanical experience. I am able to do the full lay-out for any larger metal work and do complete assembly of all my equipment from a box w/out instructions. So, I only have to "piece-out" a few things.
If you are more comforatable leaving the "thoughts" of what some guy in Arizona "thinks" might be the best way to set-up "your" dredge for use in Washington State or Alaska, and offers all the same cheap carpet in every model, and doesn't offer Miner's Moss, by all means GO FOR IT ! ! ! !