No idea about a post for a Yakima but I can comment winches. This is from a previous post I made:
Herbaldew wrote:
I started with a T1100 Fulton winch with a 20' strap. It worked fine but had a 4.1:1 ratio and 7 inch handle. It took a lot of easy cranks to get the strap wound in. That winch had a defect so I returned it. I then bought a Fulton T600 winch that didn't include a strap. It was rated to only hold a 15' strap but I found
THIS 20' STRAP at WalMart for half the price and it is also a little thinner so it fits on the T600 perfectly. The T600 has a 3.1:1 ratio and a 6" handle. I just tried it out and it loaded up my TI complete with my 29.5# motor on the back just fine. The different ratio and shorter handle did away with the "too much cranking syndrome" but was still easy to crank.
Not really endorsing Fulton, just pointing out that for the weight of a TI a higher geared winch is better for me. Not dissing Fulton either, second one is still working fine and the defect of the first one was actually shipping damage.