This is what I'm using now. I use them on dripping wet hair so my curl formation won't be disturbed. I part my hair in the middle and criss/cross the hair over the center part. I lift the middle before clipping for more heighth. I then take an old t-shirt and scrunch my hair. I, also, start at the back crown and end at the very front. Correction:
I just measured and I'm using the 1 1/2 ". The 2" was too large and the 1" too small.