I use NOAA first, as I don't like being out in 6 foot whitecaps! If they give a good report, then I check Iwindsurf to compare and to see what the wind will be like in the area I plan on fishing. That's it for me. Sometimes they're wrong but its been efficient for me personally. I've never gotten a 2 foot or less forecast and ended up in 3-5 footers unless a storm was rolling in.