To me I like the solution mentioned by Keith (or JC originally) of "hooking in" to the spin sheet or mainsheet and then maybe getting sheets that are alittle (maybe 5') longer than spec. For hooking in, use a shackle that can be released under load, instead of a carabiner. This way you don't have an extra tether to deal with and should you go off, I would think you can hold your breath for the 30 seconds or so it would take for the boat to capsize or stop itself. I think that is the solution I will employ along with getting a heaving line.
Now my only other question comes to chicken lines. I think I would go with the system that you have a jam cleat on your spreader bar (as recommended by a couple of tybee/worrell veterans). I'm just not sure how to attach it, anyone have a picture of how that is mounted??
cheers
TB