umm...you inadvertently left out some valuable pieces of information: which two boats, what are you going to be doing with them, and how skilled are you as a paddler? The BEST solution, of course, is to try out the two boats you're interested in and see which one "fits" the best.
I purchased a Prohoist kayak hoist, but the instructions don't include how to thread the rope...
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I purchased a Prohoist kayak hoist, but the instructions don't include how to thread the rope through the pulleys so both ends of the kayak are lifted simultaneously. Can you provide instructions?