I was just there last week (on the big lake), and it was on fire for smallies. We fished mainly around Wapato Point (since that's where we were staying) early in the am. As in before sunrise. The bite dies quickly once it starts getting hot. It does pick back up at night time though - we caught lots of fish after the sun went down. We got most of our fish on topwaters and dropshotting, with a few jerk bait fish too. Topwaters used were spooks and poppers, and basically any type of green plastic was the ticket for dropshotting. The wacky rigged 5 inch cut tail senko was the top dropshot producer, but like i said, anything green worked. Fished depths from the shoreline out to 30 feet and caught fish all over the point. Lots of fish in the 2 pound range with the biggest going 3.5.

Nothing like fish blowing up on a topwater in 20 feet of water.

Like Sky-Guy mentioned, Lake Wapato and Roses are great lakes too. If you're looking for largies, they both have monsters. Wapato is much clearer than Roses, so you have to be a little more stealthy in boat positioning. The bottom there in most places is firm and doesn't have many weeds, wich is very conducive to jig fishing. It also drops off pretty good in a lot of spots so spinnerbaits slow rolled/fished deep can entice a fish or two. Roses has pretty stained water surrounded with reeds and mucky bottom, so you can get in pretty close and pitch weightless plastics as deep as you can get em. Brushhogs are a good plastic to throw there. Frogs and buzzbaits can get you into some nice fish on both lakes too if you get there early enough.