A good cleaner wax applied to the hull, then a coat of good polish will get the  
oxidation off and keep it off for around a year. I have a 30 yr. old Chris Craft  
that I wax and polish every year and it looks like it is no older than 10 years  
old. Keeping it out of the sun helps a bunch too. 
  
As far as the stress cracks, that is not cheap. It will need to be grinded off and 
reapplied. There is a boat yard in Lake Charles named Olmsted Shipyard that does 
that type work. Looks brand new when finished, but it ain't cheap. 
Stress cracks in gel coat are not an issue because the gelcoat is not structural. 
But if you don't like the way it looks, it can be fixed. Most fiberglass shops charge 
around $50/hour plus material.
		 
		
		
		
		
		
		
		
		
	
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