funny you should mention this..
was thinking to myself today on the way home about that ******* of a hill between harthill and junction 5 on the m8..
seems to me best option is to climb it at a constant load (60mph, 30mpg indicated on econometer) as having a speed of 60 at the top lets me glide nearly a mile down the other side..
short ones i just try and time the end of a pulse to be at the peak