Hi Bob, the approximate dimensions of the Alpha Omega F14 hull are 8” wide at its widest point on the deck, 9.5” wide at it’s widest point on the bottom of the hull, and 17.5” deep at it’s deepest point. The term “rocker” is used by most people to describe any and all directional “shape” change along the horizontal line of a hull, but that can be a little misleading as not all directional changes act, in the true sense, as “rocker”. The aft rocker on the Alpha, as you call it, is in reality designed to release energy at, or near, the same percentage rate that has been put into the water by the entry of the hull.
When the bow “parts” the water it displaces a certain amount of water starting at zero at the bow, and gradually increasing that displacement all the way to the hulls maximum width/displacement point. The displacement is then relatively constant until there is a release of that “energy/displacement” towards the rear of the hull. An ideal scenario is to release that energy at the same rate and in the same way that it was put into the water thereby creating a very “clean” transition through the water. Unless the hull is double ended it is impossible to release that stored energy in the same way as it was put into the water. I.E. the bows are fine and deep and the transom is not. Therefore that energy release is primarily obtained by the underwater transitional shape of the aft section of the hull to the transom. That is as simply as I can put it without going into some very complex mathematics. What most people refer to, as “rocker” is simply the curve put along a hull bottom to allow it to tack easier than it would if it was a straight line from the stem to the stern of the hull bottom. Strangely enough a lot of boats are designed with little regard as to where the rocker is placed for maximum efficiency but instead are only concerned with the actual amount of rocker for a given hull length and displacement.