You shouldn’t be loading the kart into a trailer on the stand. The kart goes on the floor, fold up the stand and throw it in the backseat of your towing vehicle.
How do you put a Kart on an open trailer if you can’t lift it up and on (I am just 1 person)? I don’t think I can tilt the trailer and roll it up, I would have to lower the Kart onto the trailer with an electric stand, same way you would lower it onto the ground.
Ah okay I get what you mean now. I thought you meant you were just putting your kart on the trailer on the stand, which is generally a big no-no. Yes, a motorized kart stand will be very useful, I highly recommend TJ’s advice of KartLift. Contact them and they should be able to help you out
Take a look at http://www.kartlift.com, they’re the gold standard of one-man kart stands. With a couple models of their stands, you’re able to load the kart directly into a trailer or bed of a truck by yourself.