I use a relatively heavy U lock to lock the front wheel to the downtube, and use a thick, simple, vinyl-covered steel cable to tether the U to a rack.

I considered a rear ring lock that would take a cable like the Defender but I don't like the idea of having to leave the key in the lock when riding. That just means I'd have a loose key to pocket when parking/locking the bike. I also like how my front U lock is conspicuous from a distance.

I also use a seat leash since I have a QR seatpost clamp and the post and stoker stem are not very common or cheap.

For gear, I wonder about using a Pacsafe mesh locking web. I think that should work quite well with the front basket.

As for ugly, hopefully my DIY running boards help. :-)