Capt Kent,
I guess we've learned that spider cracks are a gelcoat phenonmenon. The pinholes could possibly have been made by the sputtering of the gelcoat gun.

You were satisfied that the rather LARGE pinholes did not go very deep? Ob viously.

338 has had some gelcoat removed but not in that area - going to sherlock with a clean glass soon as I get down there again! Sounds like it is right in front of where the lead keel ends. Can't be significant. And you are past all that!!!!