Soft areas in hull(s) - How much is too much?

I'm hoping to hear people weigh in on this... As long as the soft spots aren't in the main structural areas (like tie in places for crossmembers), what happen to the sailing experience? Horror stories? Can fiberglass hulls (mine is Nacra 5.2) be functional with some "oilcanning" and audible crackling when you press on them? (I'm not seeing cracks on gel coat)

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Pairajacks
1985 Nacra 5.2
Corvallis Oregon
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too much
http://www.asnstudios.com/hobie.jpg
2 weeks ago, it had lots of soft spots around the front of the hulls. 3 young guns out in about 15mph max...