Damn, you guys are giving all the theives ideas on how to steal my drives.

A month ago everyone agreed that drives are impossible to get off unless you have the key.

the locks are only to slow the bad guys down... hopefully they make enough noise trying to steal them or attract attention in the process. the locks i have and have seen aren't deep enough for the socket trick to work most likely. this has been used on wheel lug nuts for ever but you can get a lot of bite because the socket goes so deep on the lug nut. be very careful trying any kind of air chisel as they easily can get away from you and damage other things. drape an old sheet around the area to catch the ground metal bits and use a dremel cut off wheel if you don't have access to a decent compressor and a high speed cut off wheel. should take more than 5 or 10 mins aside. just grind off the head of the thru lock bolt on the back side. be sure to was the boat and rinse well so none of the small bits of metal don't spot rust themselves to the surfaces of the boat. just my .02, ratman

If they are McGuards, a chisel used straight in from the rear, will split the outside ring. Then you can use visegrips to get the brass nut. If you still have the original paperwork that came with them, there is a number, and McGuard can send you another key. If not, the chisel works fine.