Flite Pipe made in Greenvilee, SC is the most universal extended pylon I have found. However, there is not much of a pylon on a lot of hydrodynes to attach anything to. Instead, I would suggest a monkey bar kind of tower. They are fairly cost effective compared to a wakeboard tower, it will also be much more stable than an extended pylon. Think outside of the box, there are a lot of great products out there, try fly high, air boom, monkey bar, flite pipe, skylon, and you will find something. Chad