Nice turn there Al, another PB...great work.

wow, Al! that's one great alpha.

mega congratulations!

glad we could back each other up for a good team score 

Congrats for your alpha PB, Al! 

Al, i have it from other users of the COROS that the alphas are generally quite a way off vs. what gets validated on software analysis programs. on the GW-60 the problem seems to be the opposite, at least for me: it pickus up very few alphas, and will most often under-report speeds.

bottom line, i have personally never trusted any device to give me a reliable alpha reading. i suspect there are some elaborate computations taking place with relatively limited "horsepower" on a "watch" device. in fact, i do wonder how the code describes an alpha for computational purposes, given that in plain english an alpha seems to be not the easiest concept to grasp for the average windsurfer.