Foil spin out?

Hi everyone,

I just wanted to ask if anyone has had the feeling they have some kind of spin out on the foil?

I sometimes have this when it's rather flat and having a bit more speed then usual.
Just going in a straight line, with good speed and power and then suddenly, in a split second it feels like you slip and are going to loose control...
What could be causing this? On lower speeds or going down a wave this issue does not occur.
(I don't think it's relevant to mention the foil brand I'm using.)

thanks,
Charlie

If it's the brand that we're guessing. It's often a mix of it's stickers and finish. Go into the kite forum and read the threads on mast finishes, then you can get a bit more educated on the topic.I assume you're washing your mast with water after every session, but it's not enough. You need to windex it, to remove salt/grease. As this alone is enough to spin you out. Then if still happening - wet sanding is next.