i plan on riding my mb to work once in a while and im kind of nervous about locking it up on the bike rack in front of a moderately busy supermarket for eight hours. i have a u-lock for locking up my regular bike, which should be sufficient to prevent theft, but how to prevent someone from messing with it? i can just see some punkass kid flipping open fuel valve, yanking on the fuel line, putting something in the tank or holding down the primer until the engine floods. the only thing i can thing of is to cover the bike with a tarp, but thats too much work. what do you guys do?