The best solution is to tie the boat off the dock so you don't have to rely on fenders.  That requires tie offs at all 4 corners with spring lines and I suppose that is not always available.  I only hang fenders between my boat and the neighbors boat who is most likely to blow into my boat, but generally it is not necessary.  Our fenders are tucked into a locker almost all the time.  They are dirty and seemingly impossible to clean.  The only reason I don't buy new ones is because the expense doesn't seem to be warranted since they are only rarely deployed.
	
		
			
		
		
	
								 
				
		 
 
		 
 
		 
 
		 
 
		 
 
		