I have also seen a roto-molded version of a hydrofoil with sails. I think it is called a Windrider. Maybe the company is Windrider. I'm not too sure. I don't know if they are still making them. There is one in the marina by my apartment, but I have never seen it move off it's flaot. The neigbors said it hasn't sailed at all this year.

It's the same idea as the trifoiler, but it has only one mast with a jib and main. It does look like it would be incredibly fast though.