Hi Bill thanks, I'm thinking waterboatmen because of the size. They are finicky eaters and when we are sight fishing they either come in like torpedoes and devour or they come in and look and swim away..real tricky to catch. I am trying to catch some that we released in the spring...those ones are eating sunfish now so at some point they are figuring out that they need to switch to a larger protein based diet to make it. Ive got a pretty good handle on how I'd stock now and will post my results later. Most encouraging is that 2 months in to ice they are still 2w to 14 feet down.at the bottom and taking the bait.