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Old 20th July 2009, 02:12 PM   #2
Roger
Dream Team - School Guru
 
Join Date: Aug 2006
Posts: 2,106
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It totally depends on the windspeed.
A 6.5 m2 will work nicely in about 15-20 knots of wind.
A 7.5 m2 for 12-15 knots.
An 8.5 m2 for < 12 knots.
Hope this helps,
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