My favorite trout trolling list:

Black size 6 Woolly Bugger
Green Perch size 70 Hot Shot
Frog F4 Flatfish

All 3 of these, I've found, are most effective when trolling VERY slow. I kick around in my float tube, but its like I'm waling really really slowly.

With the woolly bugger, I'll put line floatant (available in the fly-fishing section of all sporting goods stores) on the first 50-75 feet of main line, Then a small barrel swivel (size 12 or smaller), a 2 or 3 foot leader, then the wooly bugger. The line floatnat will keep it from sinking too far down.

Both the Flatfish and Hot Shot have a tendency to barrel-roll if you go to fast. Both have lots of action even when you are going slow. Its a test of patience, it real easy to go fast trying to cover water, but its more effective if you work each part thoroughly.