A question about the lower stopper - what keeps it in place in the free ride setup? Is it a friction fit on a thicker section of the rope, or something else?
If we could apply the red lock-off knot on the fly, this system might be what Mark Shinn and Toby were talking about on kiteforum recently. Launch and land with the lock off knot loose, then attach it when you want to do some board off/one handed tricks.
Looking forward to having one of these units to play with!