The variable deadrise hull patent has long since expired. But with the recent relative "success" of Hinkley's "trade dress" suits against several "copy cat" builders (
Hinckley reaches settlement with "Copy-Cat" boatbuilders), I would think Tracker (clueless) would be all over these guys. If there was ever a trade dress issue or unique feature, it's the SC hull.
I sound like a lawyer. Ouch!
Otto