First of all, outboard motors just plain suck, period. They lull you into thinking everything is good - until it isn't Really cold water coupled with a big moon = lack of bites. At least that's my excuse
My Lund actually has an I/O, but it's the d**n gas that goes bad as you put it into the tank. Draining it this week, and going to straight non-ethanol like I run in all my engines besides autos. Crap should have been banned before it hit the market. When I woke up at 4:00 am Saturday morning and saw the moon I told the guys "better pack more beer so we at least catch something!"
Big moon made for a slow weekend for this cat, two small browns, but do know of a stud caught, 9lbs 10oz. Funny, that never seems to happen to me!
I'm surprised there aren't any gas stations up there that sell pure gas. Using ethanol gas in any carburetor engine is asking for trouble. I understand many believe treating it works... I know it doesn't and if you must use ethanol based gas don't use an inboard tank holding more than you need for the outing. Glad to hear you rescued your fishing excursion.