Mine is bolted through the feet and into the front rack. Then the genny is wrapped to the rack with a snake lock. But no matter what you do someone will find a way to steal it.
The amount of damage you incur during the theft must be taken into consideration when securing your valuables. For example, when I go to Detroit in my crappy car (never take a good one) I just leave it unlocked when I park it. That way I don't come back to broken locks or glass. I never have to worry about it getting stolen either, it's a stick shift HAHA.
Mike