I don't know about that Wouter. At Tradewinds this year, during a Thursday tune up session, Andi and I were double trapping upwind in 20 knots and keeping on pace with Dave Ingram's Infusion for a long time upwind. We were side by side, both boats double trapping and sailing on one hull. Lots of downhaul on too. That's with about 350lbs. on the wire on the Blade.

When we turned downwind, we were not quite as fast, and he was going a little deeper but neither were traping.

I think the longer waterline on the F18 and more volume in the bows of the Infusion helped him do that as we were stuffing into the waves backs which slows you down.

Now, had I been Uni, I would NOT have even considered trapping in those conditions, downwind, and I'm pretty sure he would have left me going upwind too.

But, I just remmebered you have the shorter Taipan type daggerboards, so that will effect the hull flying too. I've got the deeper, skinny boards, and the hull comes up very early compared to the Taipan boards.

At least that has been my observation when racing against the guys with the short, wide boards.