I think I have caught all my sturgeon accept 1 in about 30′ of water. The other cam in about 70′
I believe StCroixer and I may challenge the depths again this year. The challenge with fishing 70′ of water is detecting a bite. I believe we were reeling up for the night and I realized about half way up I had one on.
More than depth I would be concerned with marking bait and fish. Broad armored fish make pretty nice arcs on a graph.