GreenHead,
You make some good points, I have learned not to even pay attention to the PC buoy because it is never accurate. Case in point was today. We fished Canadian water today and we were off of SP, within four miles of the PC buoy and left that area at 1. Look at the history and it says .7 of a foot in height, I will tell you that the waves were 3 to 4 feet all of the way in if not more at times. I too pay attention to the wind the night before and look at the flags in the AM when driving to the lake from 20 minutes away. I pretty much know before I get there what I am up against. I find this link to be more accurate Wunderground.com