Ok, so I just went to the Dark Side last week, and I was paranoid about the trailer getting stolen out of my driveway. I did some research and came up with Amp Lock. I ordered it from Amazon: https://www.amazon.com/AMPLOCK-U-BR...24109377&sr=1-2&keywords=amplock+trailer+lock WOW! This is one solid piece of steel! I'm fairly certain the only option is plasma cutting the coupler off to get around this beast. It was pricey, but if you read how MANY folks bought this lock AFTER they had a trailer stolen with other locks on them... I figured I'd splurge. I feel better now.