Really great comprehensive guide - excellent advice.
My last few thefts a few years ago were from my locked garage not realising how crap the locks are - doh! TBH it could probably be opened with a spam key - it wasn't "popped".
As a result I got a couple of wall anchors and some Asec metal garage door bolts. Unless they are lock smiths then the only way into the garage is to literally cut a massive hole in it which would create loads of noise.
The Oxford wall anchors are damn secure with hefty bolts. I did need to get some huge drill bits that only lasted for the job but were only about £8 off
Ebay. Think it cost me about £60 to sort the garage which is a small price to be 99% sure that the bikes are safe.
If not then the insurance will have to pay out - there isn't much more I could do to make it any more secure.
Thieves round my way have been using Strava to track down bikes. Some guy recently had his alleged £3500 bike in his "secure" shed behind a locked gate and reckons the thieves brazenly followed him home. As a result I always start my Garmin around 1/2 - 1 mile away from home & same when I return.