When I was much younger I was coached by a bass pro who fished the Megabucks tournaments and he had a sweet Cobra bassboat with a 200 Merc. He used to put Aviation fuel in his tank because due to all the airboats in So. Fla it is available at the ramps. He used to say the octane is really high and it runs better. I forgot about that until today when my work took me out west by the Everglades and I saw it at a gas station- Avgas, and just wondered if anyone else does that. Do today's motors work with it. This was back in the 80's. Guess this is a question for the veterans on this site.