Thanks guys. we tried trolling the west side over the summer. All that deep water structure caught my eye. No luck for us. We marked fish at every depth but no takers. Did get a few nice perch and rockbass.
Figured the pings were smelt or suspended baitfish and tried to fish below them.

I have my tip-ups set with a 4 foot leader, swivel, and an egg sinker above it.
Got a few nice spoons to toss in the box as well. Would jigging raps work well?