Matt wrote: Anyway, I feel like I got such a good deal and they will take more off the price for the damage if I keep it, so we'll see. I can't imagine it would make too much of a difference structurally if I fixed it since it's not a huge crack.
The experience of the local kayak dealer on Eddyline boats (Carbonlite; similar material, I think) which got cracked was that it depended on where the crack was, and how clean they got the surfaces at repair time. IIRC, Eddyline made a solvent-based repair glue (might have been super glue) available which worked pretty well. However, a couple boats could not be repaired and were totaled.
You might call Eddyline for a second opinion; I'd hate to own one of these if it were not 100% fixed.
Or, call Pacific Wave, down here (Warrenton, OR) and ask for Ben -- he did the repairs, and dealt with the boats, years ago, now.