interesting concept ive never heard of rybo....heck ive even had a meterology class and dont remember those terms at all im SURE they werent covered we did learn about thermals and such though....

i think that wind is a tricky thing to try to hunt by a forecast....yes, they can give you the direction the wind is blowing from....but what happens when that wind hits a hill? a valley? a ridge? a saddle?? a thick stand of pines? across an open field? etc etc etc.....that is why i believe its super difficult to hunt SOME areas based on wind forecasts....

i got a spot up the road from my school ive been hunting all my life...a couple times a season it will be DEAD calm winds here on the flat lands...i head up there and its STIFF...one day trees were blowing over...i get back to campus and there was hardly a breeze...my buddy thought i was nuts when i got home with no deer and still daylight...he didnt believe it was that windy within a half hour drive...why its windy up there is beyond me...its the top of a pretty BIG hill (beginning of what we call mountains in PA...Venango Co) and has a couple HUGE valleys...maybe it causes the wind i see up there...theres calm days...but its weird how some days its windy as heck and calm not a half hour away....

only thing we can do as hunters is learn as much as we can, and learn how the wind acts in our own hunting areas...

my honey hole drives me up a wall...its one of the highest points around....the wind seems to change directions 100x a day...what ive done for there is found a couple different trees i can climb depending on the wind....i know the direction the deer usually come from and where they bed....i try to keep my scent from blowing those directions...and gotta shoot before they hit my trail...just incase they pick it up...