I had a cheapo 1500# winch laying around that was for a electric snow plow. I tried it pulling my BB challenger onto my open trailer. It did it no problem single cable and was even better with a pulley and double lined.

So I take it with me nowadays just in case the car quits and I can't drive it onto the trailer.

If I was buying new, I'd get something a little bigger, but not huge because of the weight. I always think of the weight when buying stuff for a RV or trailer, it must be light weight.

My trailer already had a 2" reciever in the bed and I invested in a pintle hook mount to put my winch on, works fine. The mount weighs as much as the winch. I store in one of the side compartments in my RV.