Thanks again. No LMB now. Any fish that are in the pond were stocked by someone prior to me, and prior to the person I bought from, so that's going back at least 10 years. Either they never put any LMB in, or none survived.

There's really no "structure" in the pond right now, other than the dock. My understanding (perhaps wrong) is that LMB depend on structure. True? Should I add a downed tree top or something near an edge? before getting some LMB in there?