My impatience had turned into visual frustration as the azure blue sky above Pompano Beach, Florida, faded into silver clouds, eventually darkening into an impending storm. Thankfully, I had arrived at RIVA Racing ‘s secret testing lake nearly an hour earlier than I had been asked to, and was quickly preparing both my safety gear and video cameras. Time was not on my side, and I wanted as much seat time as possible on RIVA’s newly-minted Stage III kit -equipped 2018 Sea-Doo RXT-X 300 . RIVA’s Dave Bamdas had promised speeds of 83-miles per hour from this machine, and having d...