Jean,
thanks for sharing your board video with us but I am afraid that the US SUP market is not as easy as you think it is. We have a saying "barking up the wrong tree". In the interest of helping you bark up the right tree I suggest you;
-Forget about the Toronto boat show because it is expensive and does not offer a large number of potential customers. "Canoecopia" in Madison Wisconsin (2nd week of March) is the biggest paddle sports show in the world -it's cheaper and has 100 to 10,000 times the customers for paddle craft. Rutabega.com puts it on -nicest people you will ever meet. I suggest you forget about a bringing a boat or even a booth and just print some brochures and attend. All the big producers and many customers will be there. You will quickly see where you fit.
-Don't suggest moving production from cheap Brazil to expensive US. The US dollar is just too strong.
- I am not big on SUP but I know enough to see you don't have a performance advantage. The vast majority of SUP buyers are not paying for top performance but the ones who are will be insulted. If you expect to sell based on performance you start by winning races. Hawaii is where the world looks to SUP performance -if you can win there, you have something.
-'Supcat' seems backward, "CatSUP" or "KatSUP" would be better and a cute riff on the condiment.
-Since you are looking for business you should post in a more appropriate thread like
http://www.boatdesign.net/forums/projects-proposals/
or
http://www.boatdesign.net/forums/marketplace/
or
http://www.boatdesign.net/forums/services-employment/
This forum is for design guidance -on that topic I would say give up on the half-cat/half-board and either make a true high performance cat that can beat the Hawaiians or make a very attractive SUP board to export. If you go the cat hull route let me know. I could put together a winning business plan that produces several attractive niche craft.