Bill makes an outstanding point!
The Tornado class experimented with spinakers and short trapozoid courses (recomended by ISAF at the time to create a more visually appealing sport)in a trial held at the Miami Yacht Club. This must have been 15 years ago and well before the current rig and windward leeward courses were adopted by the class. What they found was that a classic sloop rig Tornado won almost every race. The reaching legs, shorter courses and the time involved in rasing and lowering the chute were too much for any other configuration to beat.
Racing is just a game.... and as with all games it's winners and loosers are defined by the rules... EG. the NFL's new rule this year about Cornerbacks and contact shifted the balance of power to Quarterbacks and recievers... Result... Lot of QB's are having record setting years.
Merry Christmas
Mark