So you mean that this lock isn't a bad idea then?
They don't exist. Maybe a big dog?
I've owned a hiplock for many years and it's really good. Reassuringly heavy. Personally I'm paranoid about leaving any of my bikes in public, this comes with me if I have to leave it out of sight.
What's your recommendation for a feather light lock that has a gold secure rating?
You still need something for the front wheel, if they integrated a loop into this it would be far better. You can get a Ulock for the nearly half the price. https://www.tredz.co.uk/.OnGuard-Pitbull-DT-Shackle-U-Lock-Plus-Cable-Gold-Sold-Secure_61144.htm?sku=177266&utm_source=google&utm_medium=cpc&utm_campaign=google_shopping&gclid=Cj0KCQjw4v2EBhCtARIsACan3nw7UDWmBB3-gbLcctCRFozeZSHveHEIU0ayoMEPVtkcpI3KU1aZ17kaAnZWEALw_wcB# You can fit to bike or stash in your bag.