You know, I gotta say, I was never that impressed with the few charters I went on when I lived on Oahu either. I ended up buying a kayak and diving off of that for the last year I was out there. I wonder no about going back out and diving the YO-257 with my Meg off of a Kayak.

That was definately one of my favorites out there. Too bad I didn't get into rebreathers sooner.
Good luck, I hear the KISS is a great unit to dive.
Jim