I just pulled the boat out of the water and I've got small blisters. They are about the size of a pin and run for about 2 feet below the tower. <BR> <BR>Next year when I put the boat in the water will they grow or stay the same? The boat is in the water for about 3 months a year.

Try this website. <a href="http://www.capsante.com/Articles/osmotic.htm" target="_blank">www.capsante.com/Articles/osmotic.htm</a>

You mean the blisters are below the water line right? <BR> <BR>So does the boat not stay on a lift? <BR> <BR>Freshwater or salt? <BR> <BR>You could look into some bottom paint, but shouldn't be necessary if boat is only in water 3 mos a yr.

Just right below the water line on the side of the boat before it hits the edge and turns under the boat. <BR> <BR>Doesn't sit on a lift <BR> <BR>Freshwater only

They will probable grow and number will increase. Do a google search on osmotic blisters

Is the boat stored inside the rest of the year? <BR> <BR>If it is inside and gets totally dried out you could put a barrier coat and bottom paint on it.

That suck man I would go crazy if that happened to my boat.

Yes it's stored inside the rest of the year. I'm 100% percent anal about my boat so this sucks.

from what i've heard, most manufacturers recommend not leaving your boat in the water, or leaving it for only 2 weeks at the longest.

This is what I don't understand.... <BR> <BR>you are buying a boat... made for use in water.... it shouldn't be dry... <BR> <BR>excuse my ignorance... is it that hard to make a mfg make something that withstands the environment it was designed to be in?

Unfortunately, blisters are a common ailment of fiberglass boats that are left in the water all the time. Warm fresh water seems to be worse than cold/salt water. <BR> <BR>The cause is basically the result of the resin used in the fiberglass being just a bit porous and allowing water to penetrate and sit. There appear to be many factors that contribute to the problem and unfortunately there are no good cures. <BR> <BR>The bottom line is that one hull can be immune while another will suffer from it. Even from the same manufacturer. <BR> <BR>The bad news is that if you have some now, you will have more next year. And more the year after that. And the ones you have now will get bigger. <BR> <BR>If you keep a bottom paint on the hull to fight the growth then the blisters are not that terrible a thing. You grind them down and patch, paint covers it. <BR> <BR>If you want to keep the hull bright and shiny then you are pretty much screwed..... <BR> <BR>Rod

If you want to avoid blisters, the solution is a metal hull. <BR> <BR>You can use an epoxy paint to prevent most of the problems and still have a nicely painted boat. You need to use several coats.

I had them also, got a new boat and a boat lift. No more blisters. They will get bigger and you will get more of them if the boat is left in the water without bottom paint.

I have never seen bottom paint on a high end ski/wakeboard boat. Does anyone do this? <BR>If so, how does it look? Is it worth it?