I will use wunderground.com, NOAA, local TV forecasts - whatever has the best wind and weather - and then use that to convince others to come out sailing.

For venturing our in the Gulf NOAA had been reliable.

Last year we used a laptop with wireless internet (cellular) at a regatta to track thunderstorm activity on the local weather radar. There is also a cool site that tracks lightning activity in the Houston area that we used.