Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
Get a kayak!! They rock for fishing trout stillwaters, just search around in my posts and you'll see plenty of Stillwater trout taken in that yellow boat in my picture. Stealthy - even though mine is bright yellow, I have had trout up to 16" slam a fly right next to the boat!
Best of luck and remember, trout get BIGGER in stillwaters.
Jonathon
P.S. Strmanglr said, " You'd have to pay me to fish a lake if I could get to the rivers." By golly man, FISH ALL OF 'EM!!! No payment necessary for me!