guys, i have been a diesel guy for the past 20 years. That may be changing, i may be going twin 4 stroke. My question to you outboard guys is how do the 4-strokes slow troll?? my diesels barely move the boat at trolling speed which is great. the slower the better. Also, does slow trolling foul the engine performance at all??? How about fuel economy??? I could troll forever with the diesels, while barely using any fuel at all. Thanks.