hello to all. I'm new here and hoping that I'm in the correct forum. my question is: I'm desiging a hoist to use as a strength tester at my job. I am using a winch that uses DC current. The motor is 1.3 hp using a 12v battery with line speeds of around 10.8 ft/min to 8.2 ft/min. I need to slow that down hopefully using a pot. I would like to get the line speed down to about 1-2 ft/min. Is this possible and what size pot do I need? i'm thinking 500k but at what wattage 2-watt 4-watt? any help is greatly appreciated.