The PM-II has a lot of little teeny blisters beneath the waterline. I just
waxed the bottom with a good wax and drove the damn boat. They don't seem
any worse after a 1/2 season.

When we bought our current boat in the early 90's, the surveyor pointed out the
blisters along the chine. "Better keep an eye on those!" he advised.

Been keeping an eye on 'em for over a decade. I thnk there might be four more
than when we bought the boat. :-)
A haulout or two ago, I had the yard guy grind and fill along the chine, and
that wiped out most of the blisters in that area.
So far, they haven't returned.