Two words - Mayfield Lake. We go and love it, stay at the Tacoma Power campground, they have a great swimming area and you can beach your boat right by your campsite, if you get one on the water. Big lake, nice trout fishing, and huge Tiger Muskies if you got the gumption to try for them. It is a very nice lake and big enough to ski/tube/wakeboard away from others.
_________________________
Organized people are just too lazy to look for things.