Crankbaits really seem to be good trout producers at times. My favorite trout cranks are shad raps, risto raps, rattlin fat raps, bomber model A's, and rebel crawfish.
I also have had good success at times with countdown rapalas in sizes 5 and 7, and 9 in some situations. Countdown raps seem to work really good for browns and rainbows in streams and lakes, and I have heard of brookies smashing them.
I am sure smaller spinnerbaits would work in many situations too. I have even heard of trout smashing big spinnerbaits used by pike fisherman. I think though smaller cranks and countdown minnowbaits are the best "bass" lures for trout. Some monster laker and brown trollers use large floating rapalas trolled on three way rigs in deep flats on lakes.
Tyler