Kyle,
$.02. ... The princess also tapped out fine and when I went to drill out the mounting holes for the combings I had a few that spit out some wet core. The outer skin on those side decks is so thick that even in the worst areas it does not flex under foot. I just let it go on The Princess (being certain that everything was sealed up so it would not worsen) concluding that with the thick skins the core is not needed in that area anyway. on many boats the area between the combing and rubrail is not cored.
I think you could approach it this way:
1. Chuck up an allen wrench with a 90 degree bend in it.
2. Spin that sucker in each of your holes to clear out the mush.
3. vacuum out debris and blow out with compressed air.
4. Douse the area with Isopropyl alcohol to help remove moisture.
5. repeat step #3
6. repeat step #4
7. repeat step #3
8. inject epoxy thickened with something light weight like micro balloons with west system tubes and the $50. Royobi electric caulk gun. (or a regular caulk gun, I heard chicks dig guys with strong hands)

...or just cut the skins off and recore if it makes you feel better. not as bad a job as you might think.

The paste we used on #299's decks was Dura Tech Vinyl ester fairing primer.
Process:
1. Route out all the stress cracks with a 1/8" carbide in a Dremel or air grinder.
2. Knock down the decks with something around 80 grit.
3. roll on the paste working it into all crevices.
4. repeat step #2 and 3 as necessary.
Final knock down should be done with a longboard sander where ever possible.

Mike
C227