I have always thought that the best way to prevent a motorcycle from being stolen is to cover it up. Out of sight, out of mind. On the other hand, when my daughter was living in San Diego, first her car was stolen and found 6 months later with just the cheap AM/FM radio removed from the dash, and then her Suzuki GS500 had her cover stolen, but the bike was not touched. She actually saw the thieves steal the cover and ran after them, while yelling at them to bring it back. The guy in the back of the pickup bed, then threw the cover at her and drove off.