Weeeeeelllllllll, I think the mystery of the minnows disappearing from my bait pond is solved. They went super shallow. I had a tip from one of the ODWC biologists that had a similar problem. He floated his minnow trap at the surface and loaded his traps. Well you tried it again recently and he loaded them again. I will try this myself this week and see what happens. I expect it will work.