Don't know?  However my guess is you will see lots of smoke at first, as the wood keeps smoldering it will slack off some.  I doubt you see intense smoke for 5 hours straight?   Or you could test the less wood theory and add more as you go?
		 
		
		
		
		
		
		
			
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1994 Wellcraft V21
			  
		
		
		
		
		
	
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