I went out from for a few hours and fished some of the same spots ... caught 25-30, maybe 6 keepers ... all on black/red/chartreuse and black/yellow. I had pretty much the same experience you had as far as depth and especially the black/silver fish being unreal.
I did get to see a big walleye (24" minimum) come up 2 feet from bank and grab a 9" crappie .. he had it in his mouth and surfaced about 5 feet out and I'm not sure if the crappie got loose or the walleye saw me and it spooked him, but the crappie got out of his mouth. The crappie wasn't in good shape & flopped on the surface for awhile. I went ahead and put on a large surface minnow lure, hoping to find that walleye .. but no go. Oh well, it was really neat to see and I'm looking forward to some serious Smitty crappie soon.