Squire ground anchors are what I use. Set in concrete with reinforcing wires in it around the the 'submerged' part of the anchor. Then I've got 11mm hex chain to secure the bikes. It's a good idea to put the anchor close to a wall to make it harder to use bolt cutters on it or the chain.
What's the best security for a bike in an alarmed garage? I'm thinking ground anchor into concrete & BIG **** off chain, but which types are most resistant to scumbags? (the alarm is linked to the house one)
Or should I ask someone on G wing tomorrow!?
A wolf type dog is not an option, neither is anything 'illegal' & i don't have a shotgun certificate.
EDIT, Am I right in thinking that square section chains & anchors are more resistant to bolt croppers or are they just resistant to Roy Cropper?