Hi Theresa,
I have fished at Benson for the last wto weekends with good results. Caught one 30 inch fish that weighed 7.25 pounds that WDFW had released. The picture is at Verles in Shelton. The lake is pretty well protected, and you can usually find a quiet spot to work out of your float tube or boat. I like to fish the far side of the lake in the shallower areas. Most flies work as well as the usual assortment of spinning gear. There is also no waterskiing or internal combustion engines allowed, nice plusses over Spencer and Isabella. Finally they received a plant of Triploids that are pretty fun to catch. Most have been caught right at the boat launch. Best of luck. Andy M