Simple and Small hole repair

WBoweIII

Cadet
Joined
Jul 25, 2013
Messages
15
Please forgive me as I am sure this has been answered 100 times here but I am new to IBoats (and boat repair) and there is so much information in the forums that it is a bit overwhelming.

I recently bought a 1986 Thundercraft Tri-Hull. She is generally in great shape and running good.

There are several holes on the bow where a trolling motor used to be (which unfortunately don't line up with the holes on the one I am installing) as well as a few in the back from old hardware that was removed. I have already inspected underneath and there is no rot.

I would like to plug these up but am not really sure what the right product to use is.

I am hoping someone can recommend the right filler and also tell me if there is anyway to fill/sand these and make them blend in with the rest of the fiberglass? I suspect i will have to settle for a filled look but figure it was worth asking.

I would consider my skill level with carpentry/tools to be well above average (but by no means professional) and i am willing to put a reasonable amount of effort into the repair if it can be fairly seamless.

I also just ordered a copy of "Runabout Renovation: How to Find and Fix Up an Old Fiberglass Speedboat" based on several recommendations from people in this forum but if anyone has any other recommendations on books/resources on boat repair i would be thrilled to hear them.

Thanks so much for any advice. It is really appreciated.
 

GT1000000

Rear Admiral
Joined
Jul 13, 2011
Messages
4,916
Re: Simple and Small hole repair

Hi and welcome, WBoweIII...
The down and dirty quick fix for that is to get some 3M 5200 Marine sealant, or its equivalent and squeeze some into each hole...doesn't even have to be dry...
A closer to invisible repair is possible depending on the color and how much you are willing to fiddle with matching it...here is a video on how to do an almostt invisible repair by Iboats member, "friscoboater"...
Project Carlson CVX-18 - Gel Coat Repair, Patching and blending - YouTube
 
Joined
Feb 17, 2012
Messages
2,906
Re: Simple and Small hole repair

I fixed hole from the trolling motor by covering with masking tape then re-drilling to the size of a wood dowl then coat in epoxy glue and hammer the dowl in just a little lower than the gel coat then removed tape and broke the edge of the hole with a dremel and filled with a small amount of colored gel coat. once sanded and polished you could still see it if you knew where to look but from a distance it was invisible. Matching the gel color is the hardest part
 

Woodonglass

Supreme Mariner
Joined
Dec 29, 2009
Messages
25,932
Re: Simple and Small hole repair

As GT1M eluded to, it's all about your desired results. If you want it to be invisible and look like new then it will be a bit more work. Are you going to be painting or do you want to try your hand at gelcoating? Do you have acces the the back side of the holes? Are these just regular type screw holes approx. 1/8 to 1/4" diameter? If so, I'd think a dremel tool, some acetone, and some gelcoat paste would be the chosen method of attack if you're gellin. If you're painting, you could use Marine Tex or PC-11.

Just some ideas from an...

OldDumbOkie.jpg
 
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