Here
is a little bit of text that I stumbled upon when looking around the net for info on paddle shapes and bailer efficiency.
Worth a read for a good understanding that busts a few myths on the operation of foils.
Our wing paddles are basically foils, so a bit of knowledge in this area never hurts.....
Follow the path of the independent thinker. Expose your ideas to the dangers of controversy. Speak your mind and fear less the label of 'crackpot' than the stigma of conformity. And on issues that are important to you, stand up and be counted at any cost.--- Thomas J. Watson