When docking the pontoon and not using for a couple weeks, is it better to leave the motor trimmed up so entire lower unit is above the water or leave it down in the water?   I have a 40 Merc.   My old motor was left down in water and lower unit became scaled white.   I have heard pro's/con's.  Appreciate any advise.   Thanks,
				
			 
					
				 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		