I keep my boat down at the cabin and have been using a cast coupler lock. I just watched a video on YouTube where a guy picks in in 3 seconds. What a piece of crap. I now nothing will be totally foolproof but it should be a little harder than that. Anything that can be cut with bolt cutters is a no go as well. Even easier.

What got me started is a guys trailer was stolen in Memphis and he was on the news. He had 3 different locks on the trailer and the guys got them all off/cut in less than a minute and gone! He had security cameras and got it on film. So I Googled the lock I use and found reviews indicting low stars and watch the video on YouTube. Unbelievable to me they can sell a product so worthless with the advertising saying "Advance locking mechanism resists picking and prying". What a joke.