Last fall my neighbor sold me his 1987 aluminum boat along with a Merc 35hp 2stroke motor. The motor has been in the shop twice for minor repairs and the last time it just died in the middle of the lake. Since my wife is just getting interested in fishing, another long paddling session might turn her off. So I am considering just replacing the motor with a 25-35 hp 4 stroke. The boat has a side helm and obviously Merc controls. I do have a serviceable trolling plate, but it would be nice to just be able to throttle down to trolling speed (maybe not possible). Any advice on what to look at is appreciated.