Bentley,
Another vote for the 5 in a 9-ft. Maybe a 9-6 or 10 if you're tubing it.

Also, if you're fishing alpine lakes shortly after the ice clears off, you could almost get away with dangling a fuzzy hook 6 inches above the water and still catch fish. They's powerful hungry.... Dries are a hoot when they jump out of the water and come down on your offering but waking a Carey Special or a spider just below the surface will put a smile on your face when the water boils... repeatedly.