Never thoughtof that. My first thought would be like Lannele said and get into snow removal, but my second thought is...
Hmmmm....... sounds like you should research this. I'm sure someone has tried it though and the loophole is probobly already repaired.
Let us know what you find out though!
TSgt David M. Famiglietti
United States Air Force
EarthWorks Professional Outdoor Services
North Las Vegas, Nevada