How do the anchors work? Would the council really notice if I stuck one into the pavement by the garden wall?
The council WILL notice if you put one in on public land, yes!!
Generally, you sink these into your own patio or driveway. It's an open box with a bar or loop inside, which you concrete into solid ground. You then run a chain through it and through your bike, thus securing it.
My issue with these is that the chain sits too close to the ground, allowing someone to brace bolt croppers on the floor and just cut the chain.
Big heavy mammoth chain with shrouded lock round rear wheel and frame tying them together.
Good start, yes.
Almax chains are pretty much the best, IIRC.
Oxford disc lock on front wheel
Oxford are pretty good.
Others are better, but more expensive.
Alphadot kit + warning stickers
Never heard of these making any difference myself, but feel free.
It generally guards against parts being nicked and resold, but most people don't even check this on eBay.
Smaller but tough bicycle lock around back wheel and frame on the other side
Starting to get a bit overkill now...
Bike cover which swamps it totally
Good idea.
I was curious about the immobiliser, how do they work/get fitted?
Generally you will take it and the bike to a professional fitter.
Essentially, it stops the bike from being started without the ignition being properly turned, ie using the correct key.
Many also stop the bike from being hotwired, due to how the immobiliser is wired up.
However:
If you want one, get one *with* an alarm!
You will need to keep spare batteries for the remote, else you can't start the bike.
You will need to make sure your battery is up to the task, else you'll come out one morning and find it drained. This can also be problematic with some immob models, as you then cannot bump-start (and sometimes not even jump-start) the bike!!
Get it fitted properly by an approved and, ideally, well-recommended fitter or mechanic - I've known several immobs malfunction and cut the bike out mid-ride, including once when the guy was cornering on a sharp roundabout!!
Conversely, alarms are much cheaper and you can even fit some of them yourself.
It does nothing more than make an annoying racket, but it lets YOU know someone is messing with the bike. Make sure you adjust the sensitivity so it doesn't trigger every time a sparrow farts, but still goes off if someone so much as kicks the bike!