Tripoli MN hosted an experimental launch on 5/24/09 where they attempted to fly the largest amateur rocket ever launched in Minnesota. The rocket weighed in at 180 lbs and was supposed to go to 14000-16000 feet but only made it to about 8000 feet because of some drag on the launch pad at liftoff. But it was a picture perfect launch and a perfect day, and lots of spectators turned up for the event.