I would read up on the Cascade conditions and reports page, there is a wealth of info to help you get on the fish. Poison Creek is a good spot to out of but has lots of people on the weekends.In general the North end of the lake is perch country. Find a nice break and fish the whole way, shallow to deep, deadsticks with small perch pattern jigs tipped with a piece of a worm has been very effective for me.