How are the tesoro's set up/ my new silver u max(new to me) ran great on the beach (salt h2o)/blk sand and dry sand and in the blk sand I found a quarter at about 10" no kidding . This is great for me but I would love to know how a fx'd grd blac. unit can do this. By the way I hunt the NC coast . My Mine Lab is the only other unit that can do this! gottit