The lake where I ride has 87 octane marine fuel no ethanol. Or I can fill up on the way with 89 or 93 octane reg fuel w/ up to 10% ethanol. What are you guys doing?
I normally buy the Premium fuel on the way to the ramp.
I think you are safe either way. I will be sure to stabilize the fuel prior to winter! And normally run some seafoam thru them at times during the season.