I finally stopped pre-stretching my carpet after a 20 year installer in Reno told me it was a waste of an hour
He said power stretching on the roll does the same job and I tried it on a 40 yard berber last Tuesday and the seams laid flat with no ripples. Now I'm wondering if I've been adding an extra hour to every job for nothing, so tell me, do you pre-stretch or just run the power stretcher and call it good?