Average Lap races

I assumed that the would be only complete laps.  Not really possible otherwise.  Start and finish line are the same line and the SI state you MUST go thru' the finish line each lap. 

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Scooby_simon Send Private Message Find Member's Posts Visit Member's Homepage Really should get out more Joined: 02 Apr 04 Location: United Kingdom Online Status: Offline Posts: 2415	Post Options Post Reply Quote Scooby_simon Report Post Quote Reply Topic: Average Lap races Posted: 13 Feb 05 at 9:33pm
	I assumed that the would be only complete laps. Not really possible otherwise. Start and finish line are the same line and the SI state you MUST go thru' the finish line each lap.
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iansmithofotley Send Private Message Find Member's Posts Visit Member's Homepage Far too distracted from work Joined: 16 Mar 04 Location: Otley, West Yorkshire Online Status: Offline Posts: 209	Post Options Post Reply Quote iansmithofotley Report Post Quote Reply Posted: 13 Feb 05 at 8:39pm
	Hi Dago, I think that it is necessary to start and finish races at the same place/mark to get an accurate result. Once you start to have 'part laps', results become less accurate as it is impossible, in sailing, because of the beats, to estimate a 'part lap' as a percentage of a 'whole lap'. It is far easier to just divide by the number of 'whole laps' completed. It is possible that a 'part lap' can be, for example, a quarter or threequarters of a 'whole lap'. If the 'part lap' is ignored, then the results will not be accurate when it comes to dividing the time by the number of laps completed. Ian (Yorkshire Dales S.C.)

Scooby_simon Send Private Message Find Member's Posts Visit Member's Homepage Really should get out more Joined: 02 Apr 04 Location: United Kingdom Online Status: Offline Posts: 2415	Post Options Post Reply Quote Scooby_simon Report Post Quote Reply Posted: 13 Feb 05 at 2:33pm
	We use average laps at Grafham for some of the Handicap starts. We get a fair spread of lap times even for just the cats. The skill is in setting an appropiate sized course and then ensuring you keep a close tag on every boat on every lap. We (when I am doing duty's) usually assign each person one handicap fleet (slow/fast/cats) and maybe one one design fleet (depends on numbers) so that you can get a feel for how quickly the fastest boat in the fleet (Say Tornado) and slowest (say Sprint 15(dart 15)) are doing laps. You can then advise the race officer as to when it is appropiate to finish each boat. At Grafham we have written the Sailing instructions in a way that we can actually finish the same class of boat on a different no of laps) - We aim for about 60 minute races in the morning, 70 mins PM and then about 1 hr for the 3rd (Summer only)
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Dago Send Private Message Find Member's Posts Newbie Joined: 17 Dec 04 Location: United Kingdom Online Status: Offline Posts: 20	Post Options Post Reply Quote Dago Report Post Quote Reply Posted: 13 Feb 05 at 12:51pm
	As the spread off dinghies & cats expands over the range Topper - Hobie Tiger, at my club, we are considering using the 'average lap' format for our races. I would like to hear the pro's & con's from anyone who has been involved in running the system at their club. Does location ( coastal / inland ) have any bearing? How long do your races last. We are looking to run up to 3 races a day, of about 60 - 70 mins duration, with a lunch break as well! I am sure that by using average laps everyone would get to have a reasonable length of race, whether they were in a Topper or Hobie or 49er and if used correctly, majority of the boats can be finished in a reasonably short space of time, to aid back-back racing. Regards Dago - Sailing Sec. Eastbourne Sovereign SC
	Dago RS400