Okay, so a few clarifications...
http://s1285.photobucket.com/user/Michael_Satanek/media/Hobie%2018%20Pictures/Locations_zpsaf615609.jpg.html?sort=3&o=29the "extreme" delamination in the lip is at the rear crossbar. It is about 8" to a foot long. I noticed that there is a somewhat large soft spot (crunch) just above & aft of it (it's possible they're connected), probably ~14" x 8". I know the drill it & fill it procedure for soft spots, but how do you cap off the lip? The damage here doesn't concern me terribly as long as I fix it, I don't believe there's too much stress there. 'Walker, is this what you're talking about epoxy-ing?
The "hairline" cracks in the lip
appear to be in the gelcoat only. I'm not sure if they're due to the normal flexing of the fiberglass, or if the stress is trying to force the hull & deck to separate (yikes). These appear to originate at the forward crossbar and possibly the anchor plates, and easily extend ~5 to 10' along the side.
The front crossbar, however, really worries me. I see deformation in the lip on the starboard, inboard side, and my engineering intuition tells me that deformation is a precursor to catastrophic failure. I also see the early signs of delamination. What can I do to stop or prevent it? Are the anchor plates enough reinforcement?
http://s1285.photobucket.com/user/Michael_Satanek/media/Hobie%2018%20Pictures/IMG_1481_edited2_zps2d69ffde.jpg.html?sort=3&o=6Note the visible separation of layers (circled). Also notice the deformation of the lip. It's bowed in the vicinity of the circled delamination. This is much easier to see looking along the outside edge of the hull, but I don't have a picture of it.
Aside from that, the hull repair seems relatively straightforward.
I understand what's involved with adding glass to the bottoms & fairing, but I'm curious how you fill a chip or ding. I've heard suggestions from bondo to resin. Also, when it comes to gel coat, am I better off re-spraying the whole hull than trying to just spray the repair area?