I've had more than my share of fun on the
upper Rogue using Waller Walker, Bombers, etc., as 'wakers' on the surface. Slower/flat water about 3-4 foot deep.
Only recommendation is to take a pee first; the 'take'will make you loose your water. Don't forget to have at least a foot of line to drop when the fish goes for the fly. Drop the line or you'll have 'short strikes' more often than not.