When you say security bolts did you have anything similiar to the volcano bolts?
Thinking of getting a stainless transom top for my RIB to make it more secure from chainsaws.
More neck than a giraffe some of these thieves as its not a 2min job to take outboards. Must be a solution to safeguard our engines.. Perhaps unique marks on the engine that anyone buying an engine must have to get checked out. i.e a serial number stamped into the head. If noone will buy an engine with it tampered with it will effectively stop theft overnight.
I know its harder than that in reality but there must a solution. I wouldnt mind running an outboard hood that was plain with unique markings / serial numbers on to deter theft.