"Invisible" Hill technique?

[indigoiis]

I have found since originally posting this thread that there are also something called "Dead zones" or "doldrums", just as with sailing. You might be flying along at 19-23 mph, nice and flat, when suddenly the "air goes out of the room" and maybe the pavement gets natty and the wind picks up and the sun beats down and you are going NOWHERE, no matter if it's downhill, uphill or straightaway. Although it usually happens on a straightaway. I don't know why it is. It's like the Bermuda Triangle. For me it is on our bike path in a town called West Warwick, and it is right before the turn off the path. About 2 miles of doldrums. Yuck!

(oh and as a postscript, the doldrums are completely in the head... you are still going 19-23 mph, it just doesn't "feel" like it!)