Rick, you probably have seen some of my earlier postings from earlier debates. We have two small fleets around St. Michaels. Our Herring Island Sailing Fleet uses a 15% rating adjustment for non spinnaker boats, with a 7.5% adjustment if the boat has a cruising spinnaker (gennaker?) tacked to the bow - no poles allowed. It has worked pretty well over a number of years.
Our Wednesday Night Fleet uses a flat 10% adjustment for non spinnaker boats - white sails only. We have been doing this for about 15 years - anything more 'fancy' creates confusion. The Charleston fleet has a sliding scale dependent on the style of boat, but when trying to explain it to the troops, all I got were rolling eyeballs. In each case, the skipper must make his/her decision before the course is posted - no 'cheating' when it is an all reaching course or some other factor. In most cases, it is because the wind is too strong, or the crew is too small. In strong wind (inexperienced skipper or crew) some racers would not participate if they couldn't get some relief for not flying a chute. However, when it is blowing and the boat would be near or at hull speed without a chute, the adjustment may be too large. One caveat - we have series races - Herring Island has three four race series - from May to the beginning of October and the Wednesday is one long series of up to 22 races all summer - and both have throw-outs. If you are trying this for a single race, you may want to come up with a sliding scale - when it is blowing hard enough to have boats get up toward hull speed without a chute, a 15% adjustment would be excessive. I have had races where I was near 6 knots in my 30-1 with a poled out genoa and competitors were fighting to keep their boats under the chutes and were only going a wee bit faster. In medium to light conditions, 15% may not make it even. Good luck - if you are only dealing with C&C boats (traditional ones, not the new 30) you can probably choose something which will be equitable, when you get into a fleet like ours (C&C 115 at PHRF 75 to Triton at 252...), then it is tougher. Gary Nylander 30-1 Maryland From: Rick Brass via CnC-List To: cnc-list@cnc-list.com Sent: Friday, March 20, 2015 9:17 PM Subject: Stus-List PHRF Adjustments for Spin and JAM in a single fleet OK. I know this has been discussed before. But I just spent almost two hours in the mail archives rereading a whole bunch of previous messages, trying to come up with a consensus opinion on how to adjust PHRF ratings to allow spin and JAM boats to compete in a single (small) fleet. What I firmly believe I have discovered is that, sort of like economists and politicians, if you laid all the opinions end to end they would never reach a conclusion. I know that a number of PHRF organizations give a boat both a Spin and a non-spin rating. And I understand that local some local organizations with small fleets running in a single event will adjust the ratings of boats in non-spin to promote more even competition. From what I can see, the credit for running non-spin seems to be in the range of 10-18 seconds, or 10-15% of the boat's PHRF. What I'm trying to do is plan for a "C&C Cup" to be run as part of a local charity regatta called Pirates on the Pungo, in Belhaven, NC on the weekend of May 15-17. More on that later. The race on Saturday is a longish (10-12NM) pursuit race that starts and finishes in the harbor and has north, south, east, and west legs. I know of about 15 C&Cs within a day's travel of Belhaven, so I'm guessing the fleet would include 8-10 boats, with some cruisers and 1 or 2 real racers. To promote camaraderie and competition, and also so I don't have to pony up too much for the prizes (the winner will get a half hull of his own boat made by Andrew Burton), we would have a single fleet. So help me here: How does your local PHRF or sailing club adjust the ratings between Spin and JAM to allow both types of boats in a single fleet? And how equitable are the results based on your experience? Rick Brass Imzadi C&C 38 mk 2 la Belle Aurore C&C 25 mk1 Washington, NC ------------------------------------------------------------------------------ _______________________________________________ Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
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