After reading over a few posts, I bought a $30 Cabrinha kite leash (pictured) that can attach to the spreader bar. This leash seems much less likely to creep up than my original one. I'm not doing unhooked wake-style tricks so I don't really need a handle-pass leash. I also prefer the front attachment point, as I've read that some have had problems in the surf being pulled backwards underwater when the kite is down and gets hit by a good-sized wave. Finally, I have had one or more of my lines inadvertently clip into the leash carabiner which was discussed in one of the links on this thread. To attempt to avoid this, I've added a piece of clear plastic 5/16" tubing that I can slide over the gate of the carabiner (similar to:
http://www.kiteforum.com/viewtopic.php? ... 4&p=606569). Best-case, it keeps the lines from getting clipped into the leash carabiner, worst-case, the tubing slides off and I'm back to the stock setup. Hopefully, I won't be inadvertently losing my kite again anytime soon. Thanks for everybody's comments on this.
Dave