Dave,
My observations over many years are the basis of my opinion. For your
benefit, my definition of "Terminal" is beyond economical repair. Blisters
below the Gelcoat can be very costly to resolve. When buying a glass boat as
Janet is, the presence of blisters should immediately turn her off. Unless
of course, the offered price makes the gamble of serious repair expense
feasible. The question she has to ask is, does she want a fiberglass hobby
or a sail boat she will sail. There are many variables here, like recurrence
in the same area or even elsewhere. Blister repairs are often unsuccessful
and if for no other reason, seriously affects the resale value of her
investment. She also has to consider today's economic climate. As much as it
is distasteful to the readers of this NG, it is a fact that many boats will
come on the market at extremely low prices and she will have much more
choice. There is no reason to take on this problem to a potential buyer with
cash.
Steve

"Dave" wrote in message
...
On Thu, 11 Dec 2008 17:47:11 +0100, "Steve Lusardi"

said:

but if the blister is actually in the
lamination, the damage can be very costly, even terminal.

What is the basis for that conclusion? Personal observation? Sea stories?