Postpone Blister repair? You can''t, you have to take care of them now!!. A Blister is water penetrating the bottom of your boat. If left uncared for you could lose the whole hull. Blister are nothing to fool with. If you have any confidence working with glass you can do this job yourself.I had three first time I pulled my boat. I dug out all the effected area sanded it down smooth leaving a cupped area to lay in new glass. It is a big job and I understand why a $300 to $400 a foot figure is given. But do it yourself or pay but it has to be done and has to be done now. When it all repaired don''t let it happen again use a top grade epoxy paint and solve that problem forever..