The explanation is that by having it behind the foil where there is a smoother ride (less elevation variation compared to nearer the bow) and therefore less trim variation from the wand moving less, there is less "porpoising" from reduced trim tab movement. Makes sense and seems pretty clever.

Sounds nice. I thought there was a damper control on moths that helped reduce the porpoise effect..

I guess unless the seas are really steep/square having the wand behind the foil should do nicely...

What about getting rid of the amas and putting two center hulls together for a catamaran? Would that increase the price that much? More sail area needed?

Fulcrum Speedworks put this out on their Facebook page.

BIG Website update including a thorough FAQ and detailed description of the stuff that goes into the UFO. Check it out
http://www.fulcrumspeedworks.com/UFO/

Their Facebook page is https://www.facebook.com/fulcrumspeedworks/
Hint the price for the UFO is under $8,000

https://www.youtube.com/watch?v=LcDG0OU08jU

(dutch made and ordered by New York Yacht Club)

Looks like a great boat if you have $500,000 to spend. I would love to do the Mac races on this.

The UFO won this award from Sail magazine: https://www.sailmagazine.com/boats/best-boats-2018-foiling-ufo

It is also nominated for an award at Sailing World magazine.

Very good explanation in the vid by the maker(s). But what about the rudder??

And a genius design!

Here's a nice vid including the comparison with a wasp.


https://www.youtube.com/watch?v=hNyzX80Kqdk

The UFOs seem to been beaten to the finish by boats like a Butterfly (for people outside the USA, it's a heavy 12' scow that is much slower than a Laser) in their first regatta, in light winds. The Waszps aren't as fast as Moths, but that still mean they are a lot quicker than the UFOs in such conditions.

There's a bit of unfair comparison in that vid. Early on, it says foiling isn't easy and shows a bunch of Moths crashing. It then shows a UFO foiling nicely.

But the vid of Moths crashing seems to have been at the Sorrento worlds, where howling winds had about 35 miles of open water to build up waves which then met shoals and currents. The UFO vid shows someone sailing in perfect conditions; the sort of stuff any decent sailor can foil on any decent foiler.

OK, it's a promotional video, but the comparison still isn't fair.

https://www.youtube.com/watch?v=rx2qG_YMrDs

the near future.