I think you're right, PLovett,
if there is a goodly amount of power applied at the time e.g. take-off power
but in the low power cases e.g. at idle, I believe the forward speed of the aircraft overcomes the relative 'forward speed' of the prop tips (combination of tip speed and prop pitch relative to the ground it is striking), which it obviously doesn't with lots of power on. So with lots of power on the might bend forward but with little power on (but power, nevertheless) they usually(?) bend back. I think I know what I'm trying to say but, as ever, happy to be proved wrong by those in the know
