The Wot-tac was an invaluable tool for me as a coach at the Olympic Games in London 2012. It was the most reliable coaching aid I had and it allowed me to quickly analyze the course orientation and which end of the line was favoured. I would highly recommend this device for any serious coach or keelboat racer or even possibly a dinghy sailor if they were able to keep it close at hand.
Thank-you for providing me with such a valuable tool. I was not expecting this device to be so helpful.
2012 Canadian Olympic Team Coach