Great post.

Here in Mobile, AL where boats stay in the water year-round blistering is a
problem.

My Peason Flyer just purchased from Connecticut had zero bottom blisters but
was covered in blisters at the trailer pads from sitting on the trailer for
4+ years. The carpet on the pads never dried out.

I used a black water barrier / coal-tar type product on my last Flyer and
that stopped all the blistering. Water could not get past it to the
gel-coat.

Dennis