That's odd, it appears that US Sailing has updated the Portsmouth numbers for ISTP-2. When I copied them early this year, they were: 77.1, 82.5, 78.4, 76.7, 70.8. Checking the website now, they show a 250# min weight (which isn't how the class rules read) and the numbers: 77.1, 82.0, 77.1, 76.7, and 72.0. I never thought the numbers would change like that for an inactive class - go figure.
Anyway, the new numbers probably are more accurate - they reflect how I felt we did on the water.
And, yes, I felt it was 12+ knots most of the time. Fresh water starts whitecapping at about 12. The Neuse is brackish and it takes more wind to whip up salt water. I saw broad patches of water on the verge of whitecapping throughout the second race. The puffs were higher. My read of the wind was 12-14kts with puffs nearing 18.
Joleen was fully trapped out and I was hiking hard at times. I had to spill air twice in the biggest puffs - and that simply doesn't happen in 10kts on an Isotope. I usually don't trap out at all at 10kts singlehanded. At what point do H18s double-trap?
Anyway, it was fun until the mast broke. As best I can reconstruct the failure, I think the rotation limiter gave way. That let the mast rotate sideways suddenly at full load, and it simply folded in half. Frank Meldau (of IFG - the manufacturer) was very surprised. It was the first Isotope mast collapse in 30 years. Unfortunately, it shredded my mainsail in the process, so that's it for the season.
Regards,
Eric