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					Originally Posted by  mikesz
					 
				 
				You would want an electric "lift" not a "winch". The lift will lock a winch does not. Ask me how I know! 
			
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A winch can be designed to using a pulley system. You can use one of the cheap winches from harbor freight and a good rope. With a pulley system.  Pretty much incorporating a cheap normal lift system that you would do manually, but using a winch to raise the roof. It has been my plan but money is tight right now so I havent.