I keep my classic bike where I can see it and when stored in my garage I jam a bar through the door rails of the garage. I also have an IP camera pointed at the door from my kitchen window with a motion sensor that sends me an immediate signal to my cell phone. My classic truck stays in my driveway and I pull a wire or a fuse from time to time, it sits in my cameras line of site, and blocks the garage door where my bike sleeps. I also have a backhoe and I’ve bought a 1 gauge kill switch (89$) to disconnect the batteries (24vdc). I also have the emergency kill switch hidden and keep it activated when not in use. I use the backhoe to cross my yard keeping my boat, and sea-do hard to get at.
This year i have realized using my older smartphones as gps trackers on cheap monthly plans are another method to use.