Hey cK, I troll for both kokes and perch using my bow mount electric real slow. On Washington I start just off the weedline in at least 25 ft and pass 10ft deeper each pass until I hit the size I want to keep then throw out the marker buoys and then switch to jigs with perch meat. in the winter or other cold months they can be found 65 to 115 ft-- the brighter the sun the better in cold months. trolling with bottom bouncers in this lake you will loose gear! but if I wanted a cheap hobby I wouldn't be a fisherman I know cK you like to release fish , but the fisheries guy I talked to at Kapowsin suggested we keep all the rock bass we catch, they are stunting themselves and competing with crappie and gills. Samething happened to st. claire and American. I don't think I've ever eaten a rock bass -- but they should be good like most sunfish. later