I used to sell them for a few years, and I think they are great! Just like any small boat in big water, you have to know your limits. But, hell do they get up and go with a small 4 or 5 hp. I still use one, great for fly in trips! Twice a year me and a group of us would try to wreck one on our trips, never happened!
And just for the record the Foldaboat was sued and went out business for copyright infringement. They where at best a cheap copy
If, I didn't move out into the country and have other interests, I would still be selling them.