Exploring practical options for towing a small/light flat bed trailer up mountain side that while flat at bottom gets progressively steeper until almost vertical right before it rounds out cresting at the top. Maximum design load not to be exceeded, not including trailer weight which has not been selected yet, is 2,000 lbs of building supplies secured onto trailer bed. Total distance travel will be 2,000' from bottom to top that's at an elevation 1,000' above. I was looking at anchoring rope or cable (if any capstans do steel cable) at the top and having the gas powered capstan be secured in the front of the trailer with a roller guide for the rope/cable to run through on top at the front of the tongue of the trailer. But, that might be a little too much excitement for the operator, so let's just figure the engine/capstan is anchored at the top, pulling the trailer up. I started thinking capstan winch cause drum winches become less effective as their drum fills up and it's near at the end it would need to be most effective. Some of the capstan winch outfits talk about limitations on rope length of 500-600' because of stretch. Some talk about different or larger ropes less so. If above might be practical, what minimum size combinations of engine/torque/capstan/rope should I be looking at? Is steel cable even an option with any capstan rigs? If above is impractical or not advisable, what might work instead to accomplish the task? Thank you for your response.