Hi Rolf,

Don't think my shroud tension is higher then average for a F16 boat. But it's not just this Blade, All my previous boat had this tendency. Probably a side effect from having the mainsheet connected to the sail in stead of to the boom. So there is not enough boom pressure to rotate the mast enough.
And maybe a bit too much friction in the mast rotator lines/blocks. So when meeting a wave, the mast shakes and rotates in a bit and doesn't rotate back.
(only in light conditions)

Geert