CROC-LOCK----- anyone got one, or has an opinion ?

I'd rather go with a giant disc-brake lock with an alarm, but any lock that works is worthwhile.
 
I'd rather go with a giant disc-brake lock with an alarm, but any lock that works is worthwhile.

Totally agree, thinking of this as a 'back-up' --seemed like a good idea, just wondered if anyone had one?