Did you ever do this work? I have the same issue. The previous owner just through a bunch of epoxy on it....and did a piss poor job of it. I noticed it was a little flexible around the damage so I started pealing away the epoxy to replace with marine tex for the time being. Well there is a hole through the hull into the anchor locker area.  
  
For the meantime I am going to stuff back with epoxy but how do you glass a hole??  
My thought was to grind it down and start laying glass from inside the anchor locker. That would buildup a good backing and then I could either glass on top of that from the outside....or marine tex over it and sand???  Thoughts
		 
		
		
		
		
		
		
			
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				SALTY CRACKERS 
Brian Stuart 
Daphne, AL 
1989 V20 Dual Console
			 
		
		
		
		
		
	
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