At least in the A-cat class older design still are somewhat competitive.
At the mid-winters, I sailed a 2000 Bim with new sails and found it more than competitive, I just wasn't. New boat, new driver, not a fast combination. My Waterat will be competitive as well. As I stated in the last post, right now the mast-sail combination are the areas to focus upon. They are where the speed differences lay at the moment.