Saw this tidbit that Pat Miller posted on Youtube in 2014 with some vintage Hydrodyne hulls being driven by some very special individuals. Maybe you've come across this but if you haven't worth the watch. Also a Hydrodyne Jet boat was included. There is some discussion on the internet about JFK having one delivered around the time of his demise. Thanks Pat for posting on the www. Any more to share? Here is the link.