The principle is simple. Sit on the hull, get the loop of the trapeze in the hook of your harness. If the trapeze is designed properly it will stay in place in the hook and not drop of. Push with one hand, get your butt outside the hull, putting your weight on the trapeze line. Then put a feet on the hull and push, you will end up standing up sideways on the side of the hull. That's all there is to it.