Yamaha engine security fasteners

[Corkster]

I heard via a guide out of Venice LA that you can install special fasteners
on a Yamaha to make theft or the prop and lower unit harder for the bad guys.
Any information on this is appreciated.
Thanxs,
Corkster

[hooknup]

I don't know about special fasteners but they do make something called a prop lock that is a keyed nut for your prop.