Originally Posted by
Medic Zero
Zefal makes a locking seat post quick release that is a lot more low profile than that one. I've never seen it online from vendors in the states, but stumbled across it when ordering some parts from Australia. IIRC it was about 15 bucks. Somebody must stock it though.
This? I can't figure out how it works!
http://www.zefal.com/en/locks/81-lock-n-roll.html