Very cool, the Nash Wing Surfer, in case it is too windy to Stand Up Paddling. The wing is inflated in a minute and you can start immediately. It was about 20 km/h wind speed and for me the third time I tried it.
I used the short Makaio Stream iSUP with 5 fins. It is very agile and has a very wide EVA deck. Actually, his field of application is in whitewater.
An iSUP is not really the right board to achieve speed. Here foil hardboards are clearly superior but also very expensive. For me, the fun is with the Wing and for that the iSUP is enough ;-)
If the wind slows down, you can simply let the air out at the Wing, roll it up, stow it in the luggage net and paddle back.