I agree with Legion. I have looked at my nose while dropping into a 10 footer late on a 7'8". I was wondering why I wasn't nose diving as I was way late. Turns out I had done everything right and had that thing on rail and committed to an extended bottom turn. I literally had about an inch of nose rail NOT buried and was so thankful for that little kick at the end.
Conversely I have looked back at my tail tail as I was skating down a 10-12' wave with a nor-Easter sending 1-2' ribs up the face. On the 7'8" only about the last foot and a half of tail was in the water. Did I need the other 6' of board?

The late drop was not typical of me btw. More typical would be nose dive cartwheel into the pit as the 10 footer went top to bottom on top of me and ragdolled me onto the inside ledge before letting me get a breath.