I had a Xena disc alarm on my scooter.  Hardly ever used it though.

I live on a hill. All you'd have to do is roll out my driveway and down to a pickup truck with a ramp and you'd be gone in less than a minute, silently. So, I got this lock. It's supposedly more waterproof than typical padlocks. Cost was approx $15 IIRC.

It would look good a really bright color.

These locks are particularly hazardous if you forget to remove them before you try to take off.
Try to lock it so you can't roll it a long way before it stops.

A lot of disc locks come with a stretchy cord that runs from the lock to the handlebar, just to remind you to take the lock off. I ride with just the ignition key and a key fob on the ignition. A few other keys (house, work, disc lock) live on a carabiner clipped to the bike key. My routine is not riding the bike with any but the ignition key in the lock. So, pull my keys out, see the carabiner and be reminded to take the lock off. Then the keys get hung on the lock and packed away. Works for me. Anyway, thanks for sharing. Disc locks are  a great frontline deterrent. Couple bikes at my work have been saved lately from thieves obseved loading locked bikes into utes, while a few unlocked ones have been ridden away.

Same. I have a scary looking staffordshire bull terrier/ ridgeback cross. Mine's actually protective though, so serves it's purpose. But how about out on the street? The disc lock is good there, and easier to carry around than a staffy  .

Maybe dump some 710 around the bike?