It took me ages to find the best way but I did it in the end.

Swedish rope trick? Because Algodoo was developed in Sweden. I could play with this for hours. Oops I just have done.

If you want to make this yourself (possible IA) then you should know that there are two frictionless, hidden rectangles that guide the springs and that the rope doesn't collide with the other elements.

I was going to try to make a simulation of  flyfishing cast but then I thought it might be better to go and do the real thing.