ORIGINAL: Flight Risk
I see the OP is from Oregon, so the land owner is probably an environmentalist who won't allow fossil fuels. Maybe biofuels are OK.
Sorry, that's a poor stereotype, but may be true.
I was also thinking of E85, not sure if pure ethanol is even available and how it would perform. And what could be used as an oil? Even synthetic oil is petroleum based. Would castor work?
RS
the environmentalists are mostly in Portland, Eugene and Corvallis, LaPine is a long drive from those areas... not saying there aren't any over there... I don't think there's anywhere to get E85 over there as it's barely anywhere around here.
that being said, the only thing I can think of is sound limits, which the sound on methanol would be the same as on gas...