So its that time of the year and we pulled the boat out of the water and while cleaning the hull I stumbled upon some blisters that are 1-2mm wide and about 100 of them. They are segregated to 1'x3' on each side of the hull... thinking this might be from the wet bunks from our last trailer. I thought about just getting them fixed, but I have some spider cracking going on in a little spot of the hull and some beach rash from the previous owner and thought about just repainting the hull... but not with gelcoat too much $$$. What other options are there? The boat use to stay in the water for 2-3 weeks at a time and then out of the water for 1 week. Next year I plan on buying a boat lift so I dont have to go back and forth so much.
Any help would be great...

Do a search. Someone started a post on the same thing a while back.

Paint the bottom with Imron. You will never have stains on the bottom again. We did ours last year and love it. Also not getting rash or scrapes from trailer bunks or whenever beaching the boat. Good luck

what year is your donzi?? if its newer the sides are painted and paint is not supposed to be left in the water for over a few days..painting the bottom with imron will only come off again..if its the bottom of the boat and its gel then the whole bottom of the boat will have to be striped and ve under water primer and then regeled..if you leave it in the water that why they make bottom paint but it you do this to that donzi good luck selling it with bottom paint..

the donzi classic line ''most'' are treated like a old corvette and that is the way i treat mine as well..never kept in the water..you will find that under those blisters will most likely be water and slime..thats why the bottom needs to be srtiped and dryed out or if will attack the core and then the price triples if left untreated..

you want to leave it in the water 3 weeks at a time? might as well bottom paint it, but you will have reduce the price 35% when you sell it, lose about 8 mph, and have all the other donzi owners laugh at you.... just get a trawler if you want a boat you can leave in the water....

like fixx said, most owners of donzis and other quality boats treat them like a collectable car, not like a bayliner...shame on you

If you pay attention to the previous posts, you will see that he no longer will be leaving it in the water because he got a lift. From what I gather, he is looking for advice to repair.

You will have to take a die grinder and open up all the blisters so they can dry. If possible, leave it inside a warm climate for a couple months to really dry out (good time of year for that). Next you can mix in some filler with west system and fill the blisters. Keep the mixture wet not using too much filler. Allow to dry, sand and pick your poisen for finishing. I personally have used Imron with great results. Its obviously below the water line so you could roll it and tip it with abrush. It will dry very smooth and no one will notice. I may try the Interlux two part epoxy, if you google it you will see some examples on you tube of some great results. Hope this helps
Steve

i would think awlgrip or sterling would be a better product to roll and tip it, they have special reducers for that type of application...

Could be, I will be researching this. I have heard the awlgrip was easier to work with. My last boat was sprayed with Imron and then cleared with Iron. It was indestructible and extremely shiny. Thought of ordering some awlgrip to play around with.

I had some bottom blister issues with my 20' Cigarette when I purchased it. The boat came from the fresh water lakes of upper New York and was a mess. We used the Interlux products that are specially designed for blister repair. Check in the Interlux website they have some great materials that explains the process in great detail. I ended up painting the bottom after the repair with Interlux VC Performance Epoxy that is specially designed for rack stored or trailer boats. This stuff is tough and it has been on my boat for over 8 years and is in great shape. It is also white that almost matched the gelcoat and you can hardly tell the difference. Good luck with the repair and do not be intimidated to fix it yourself.

Thats great man, exactly what Im looking for. My fiberglass guy has never used the stuff but herd good things about it. Yeah... it was just this one summer I had to keep my donzi in the water for extended periods of time... 2-3 weeks. Boat there will be a boat lift in the future of owning any boat I own.

Thanks for all the comments, you guys are great!