About Harnesslines...

A long time ago there was a poll about harnesslines Length. Outcome would be most sail 30 Inch lenght, this does sound plausible to me. (30 Inch is also most fast for me)

But what about the harnesslines??

The harnesslines-stuff is very personal, this one is directly linked to: Rider style/ harnesstype/ riders weight/ riders lenght/ more. Sooo all written below could work out different for some others.

Light speedsurfers need long harnesslines to go fast! This is really a upgrade if your weight is 80kg or even less, look for 30"inch or maybe longer. For heavy speedsurfers theoretical shorter lines should work as good as long lines for light guys...

First the position on the boom, I don't know what all the other speedsurfers do. But since I have to sail all conditions with 1 boom and normally 2 sails (temporarily 1 sail), I have noticed last season this:
  • Position of harnesslines on the boom was not stable for 1 sailsize. Between underpowered and overpowered was 5cm difference in position (underpowered forward). One day I was sailing superfast with the RSS 6.2, really gusty the day ended in a 35kn topspeed in a good gust. The next day I was surprised by the conditions, but even more about the totally different sail. Now I just had to move the harnasslines back 5cm. The first day average wind was 15kn, second day average wind was 28kn... Almost double!
  • In conditions 22kn or more I feel the need of 30" lines, just to keep more control and good speed. Why Neilpryde stopped producing the adjustable ones??
  • In lowwind (12-18kn) I use short lines 24", eventhough I get overpowered quick with this setup. But maybe is being fast overpowered the Trick...
  • I also have experienced for upwind there are better positions possible. From speedsetup making lines shorter and moving the harnesslines forward can make a difference! However speedsurfers aren't really intrested in upwind :)
The feeling I like is close to be able to sail no-hands. When you can sail with no hands and balance the sail on the rear of the board. This means the lines are a little touch to the back of the center of effort.

But I dont understand why Neilpryde isn't making 24"-30" harnesslines anymore... Have to try another brand, 22"-28" is not very handy... Can't believe this would have been a racer who decided to change to these adjustable harnesslines sizes

Conclusion would be: play around with your harnesslines lenght and position to suit your own Style!!

Erik Loots

Erik is windsurfer for 10+ years. In his daily life he is professional in construction dewatering, advisor, troubleshooter. Erik likes adventures, explore and to challenge himself. During his life he is trying to get the best out of it and have respect for the earth, nature and future generations. The modern world is about sharing, in this blog Erik shares his experiences, selfreflection and lessons learned.


  1. The last sessions I'm surfing more and more with asymmetric harness-lengths. One side full length (28-30 inch) and the other side much shorter to have a better upwind angle. For some new booms I'm currently searching new varibale lines.

    I'm thinking to get the gunsails lines (24-30 inch): http://www.gunsails.de/en/pro.php?p=1700

  2. Neilpryde has the Race-vario 28"-34" lines for this and the next season. So the longer vario-lines are still to buy, they changed the sizes. But I don't know maybe 28" is too long for you in lowwind. On my shorter-boom this line is perfect, but I only use it with 20+knots.
    NP has the travel-vario-lines in 24"-30" but I don't like them, they rotate around the spar. Only the Race-Lines are really fixed.