Wonder if bike weight comes into play. Like a 883 might go before an Ultra.
skateboard will easily carry either.
when I lived in CA I had so many Pals with stolen bikes, that I started riding around the block before going home, to make sure i wasn't being followed.
a couple of guys had the garage doors yanked right off.
this was over 20 years ago when there was a 2 year waiting list for a H-D, and the parts were not as well marked as they are now.
but it still happens.
know your surroundings and keep a head's up
I never leave the garage door open and bikes visible, I never park them in the driveway.