I'm of the opinion if someone wants to steal it it'll be gone regardless. A couple of big goons can easily just lift it into a truck and be gone in 30 seconds or less, sirens blaring if you have an alarm. Maybe a little longer if chained to a post.
I have theft insurance for that.
I'm partly with you - but thieves primarily target the low hanging fruit. Why run high-risk/high-effort when they could run low-risk/low-effort? They walk parking lots lifting door handles, for example.
If they spot a car that looks desirable, and they pull the doorhandle and an alarm gives the warning blips at them, that alone most often stops them - if they aren't specifically targeting that one car for some reason.
And if they have a reason, that's probably my fault for showing my hand. Stealth is the way to go.
My philosophy on security comes from:
a) not giving them a reason to target me, and
b) not being the low-hanging fruit.
I was interested in the disc lock because it seems small enough to pocket, is visible, and keeps the bike from rolling.
Anyone use one?
Of the two shown, which are the right size? Does it matter? (it must...)