The bass on Onalaska are always catchable, you just have to find the right technique and the right structure.
Went out last week. Launched at fishermens road. Lots of thick weeds. Frog wasn't working. Swim bait got a pike and a dog fish. Spent 4 hours chasing blow ups. Looked like bass were scattered chasing baby blue gills. Couldn't get em to bite. Hope that helps.
81° - 88° F
I was there 6/5 and 6/6. 2 guys we did very good both days. All male bluegills, kept some from 7 1/2" to 8 1/2"s. Fished shallow 1-2 feet of water. A lot of weeds around makes it tough though. Also caught 5 keeper perch.