Pull the pin and it rotates side to side while towing the kayak by the handle. Then When you go to put the kayak in the bed you just remove one side...
I hate to say it, but I have seen no small number of shafts that somebody has gouged with a torch removing bearing races. Yeah, it's all about skill...
You cannot just go on the internet and understand a cathode ray tube and the reason is that they reversed the accurate markings Benjamin Franklin put...