I came across a website for what looked to be a great idea for quick release locks. http://www.myquicklock.com I'm confused as to why they aren't everywhere - seems like everyone would want to use them - unless they don't work as advertised. I can't find anyone who uses them or has even heard of them. We're taking our bikes to Amsterdam for two weeks of riding in NL. LOTs of bike thieves... Any feedback or suggestions would be helpful.