anybody run one of those inline cutoff valves on their boat motor? since my lawn mower has one, and as bad as this ethanol junk is on small engines if it sits up too long, i was thinking about adding one to the PD just to be safe. thoughts?

I'm running the new blue Sta-Bil in all of my outboards and lawnmower.
That ethanol is some bad, bad stuff.

Cut off valve would work for the carb but if you leave that garbage fuel in your tank for a long time watch out! I had my boat down for a while and the crap that showed through my in line fuel filter when i was able to run my motor looked like OJ . It was so bad that I had to find an ant pile in my father-in-laws field and get rid of it.