Thank you all for the great advise on barrier paints, this has helped tremendously. The beginning of the week I had a chance to work on the boat and cleaned it down in a big way. Looks like new-ish. At least it is not brown any longer...
As I was cleaning the back end of the hull I discovered tiny pin-top blisters along the waterline. On either side of the transom (the last foot in each direction) and mostly along the starboard side extending forward by about 4-5 feet. They make up a strip of blisters that can be as little as 2" up to 4" wide/tall just above the boot stripe and existing barrier paint. 4-6 of them would fit inside the diameter of a penny just for visualization. They are tiny with slight blackish spots and brown discoloration right around the affected area. Photos: Picasa Web Albums - BugsBunny
I spoke with a local shop who suggested that they are merely superficial and to not worry about them. That they won't cause damage considering the thickness of the hull wall and further explained that they don't take on water since they are so small and in fact they are actually releasing "liquid" from the innards of the glasswork. All reasonable and more so since the gentleman is as a fiberglass shop owner, in a position to make money off repairs of my boat.
My question for those who are familiar with blisters of this type is simply: should I worry about them or simply get out and sail? I certainly don't want to create a bigger problem for myself by ignoring them. I have read mixed views and reasons and the problems they can cause, but lacking direct familiarity, I'm not sure how to proceed.
Additionally, if this is something to not worry too much about, is there a recommendation of what -if anything, I should do to keep them from getting worse or spreading? From what I understand a barrier coat i.e. Interlux2000E is more of a preventative to apply before the appearance of blisters. To actually do the job right I would have to remove the affected area's gelcoat, etc. and then reapply/rebuild? Photos:
Picasa Web Albums - BugsBunny
Thanks again for the great advise! I hope to hear some good thoughts, as this one is causing some real heartburn.