There have been a few glass boats at this show in the past. However, this area is the home of wooden lakeboats in Canada and the summer playground of the extremely wealthy. I'll bet You see more $ 250,000+ boats here than anywhere.
This year is an "invitation only" for Canadian race boats so, I'm not sure if there are any glass ones elegible. I suppose we'll find out.
I know that Sheppard Boats (St.Catharines) who was a large player in wooden boats, also made Donzi under license in the early days.