I was on Louisa in '08 for 3 days. In that time the fishing ranged from dismal to decent and same for the weather. We paddled in from Agnes on an almost mirror flat lake. That night a nice storm blew in and the lake was kicking. I'll add that during the three days we stayed there we didn't see a soul. We didn't catch any walleye, but then again we were rigged for lakers the whole time. I too was there in late august early sept. If you can fish deep (I caught fish in over 140' of water, almost on the bottom) you'll be into them.