hey chrome,
ive never fished the lake, but however i was watching a show that was done by the washington fish and wildlife and they were using a technique called drop shotting for perch, i dont know how to rig it myself, but they had i do believe 2 hooks on with bait and they were bringing in tons of perch , and this method also works for bass, may want to try a search for it..or maybe give fishing and hunting news a email and maybe they could return some ideas for you..