Though the SeaCart is a thing to behold...I would not want to own one...it is less practical than the Farrier concept since it must be de-beamed for trailering and cannot fit a standard width slip (a Farrier can fold).
Also, I distinguish Farrier's from the Corsairs...the former being my much preferred choice.
Another member in this concept range is the Catri...lighter than a Farrier/Corsair, foldable with Bruce foil assist. However, as Luiz can test, poor/no manufacturing support is the deal killer.
I know the seacart flies on one hull only most of the time at hyperballistic speeds, I thought farriers and corsairs were a bit more sedate and generally sailed on two which really puts the seacart a league ahead in performance , or i'm wrong <img src="http://www.catsailor.com/forums/images/graemlins/crazy.gif" alt="" />
ps when I get too old for beach cats , the seacart's the only one that really gets my vote so far !, just have to wait 20 years for them to depreciate !