About that Video, Andy now ride with 30 Inches if not longer line, after he tried 30 inches he put a guy on 24, than 26, 28 and 30 with a GPS. Same day, same wind, same sail and board he was faster and faster and from the 28 to 30,the speed jumped quite a lot when passed to 28 to 30.
All that that to say, if you have a modern board, you should use a modern stand(board shorter..so have to be stand more straight and have a higher boom) and according to that 28 to 30's inches long line. I'M 5'10 (177), I'M using 30 inches, when I tried them for the first time(passed from 26 to 30), the first thing who stroked me the most was how easy to open the sails when gust comes in a non planning mode, not even have to unhook. Also, can go upwind sooo much better.
Good luck!
Nord_roi
A practice rig like this is a good way to go thru the motions
- that's all very well for those who have a middle appendage that can touch the deck of the board for extra support, but happens to the rest of us? 
