Done a lot of thinking on this for a lot of the same reasons you have. There are several problems. One is you run twice the size of jets so your fuel consumption almost doubles taking away the advantage of the cheap prices. Another issue is methanol is very corrosive and after each run you have to purge the engine, running it on gasoline to flush the methanol from the engine so it doesn't corrode. The last issue is methanol likes to soak moisture out of the air like a sponge and our sport involves water, but I don't feel like this is a big issue your running a small tank that doesn't have a lot of time to collect moisture, a tight fuel system, and draining the tank after each run. That said I still haven't ruled it out but the pro con list isn't how I first thought it would be.