This comming weekend there is a Hydrostream Speed Boat Rally on Lake Koshkonong. There should be a Good turn out of Nice Fast Boats there. This rally is sponsored by Mark from screamandfly.com .Most Hydrostreams are putting in in Edgerton boat launch. All makes of boats are welcome to come to our rally. Just be responsable and safe, and were hoping the weather is nice! Enjoy your day! Glen Gruen 1977 Hydrostream Viper 115hp evinrude.