Anyone come up with any ideas for securing bikes against theft in the back? I use a shuttle pad when I travel with our bikes. I did make a fork down version, but my new 27.5 bike just does not fit with the gate up. So, currently I'm securing them to the tie downs using Kryptonite cable locks, but everyone knows these aren't terribly secure and not much more than an inconvenience for a good thief. Also the tie downs are not hardened steel and could easily be cut with a small pair of bolt cutters. Has anyone came up with something for this?