Why streach you IC hosing? Trimming the shroud?? Dumb, just dumb.
The hoodscoop is only going to take in X volume of air anyways, so what good is it? It's not like you could apply the 'river theory' and say the air that has gone through the fins is flowed better, because there isnt a baffle or ducting removing the 'used air' from the back side of the IC, thus increasing the volume on the air coming in.
What a waste of time.