I finally had enough with the propel drive locks on my Native Slayer 10 kayak being such a pain most of the time to engage and disengage so I decided to put my own “spin” on things and create a drive lock mechanism that, to me, is easier to use and more efficient than the stock units.
Purchase here: http://www.needfulthings.net/host/nss/store/product_info.php?cPath=63&products_id=138