Eyebolt with masonry bit with industrial epoxy. I use cables to lock my sled to in the garage. also have ADT, the baseline setup is about 700-800 for install,and about 35 a month. If your military/or eligible you get around a 44% discount through USAA. They have a contract with ADT in Alaska. Alarms/motion sensors/ you can create a compound from the lists of options. It's unfortunate that we have to go to the depths of security systems, but I guess it's a sign of times. Or you can scrap the ADT system and go to Plan B. 3 Pitbull terrier puppys from craigslist that were bred in a junkyard. The 1st Plan is probably more family oriented, Hope you find your stuff-