Not true. I can do it easily and quicker than the rolling hitch I believe.
I do not have a video and it would be hard to explain in text - for me anyway.
I think this is going to be more of a problem then you anticipate. You will need to tie the bowline while you are being dragged but worse then that you will need to tie it with one hand while the water is pulling at the bitter end of the line dragging behind you and if you arenít at the end of the line you need to pull the line up to you when you tie the knot. I donít think you want to let yourself slide down to the end of the line just so that you can tie a bowline.
But now that you are tied into a line how will you get back to the boat while being dragged? Maybe having a harness with a short line in your pocket with an ascender attached will answer both questions. You can clip on and it gives you a way to work back to the boat while holding onto whatever you gain.
All the best,