How much do you weigh? 105 kg? Are you planing on a 7.5 on a 124 liter mistral in 13 mph? Salt water maybe? Hard to believe. Anyway, I weight 77 kg (167 lbs) and can't plane in 13 mph winds (white caps beginning to form) with a 7.5 on my formula board. With a 9.2 sail and my formula - yes, with some pumping. Probably the 8.4 too with a lot of pumping. Of course, I don't know what sailing in steady winds is like so when I get on plane in marginal conditions, it's usually not for long, so I have to rig big to keep going.
I have a bunch of stuff and a dedicated van, but some of it has been around for a long time. I take pretty good care of the gear, so I get good, long service. I did replace one sail and two booms this year.
Here is my sail usage from last year:
11.0 = 5
9.2 = 10
8.4 = 6
7.6 = 17
6.6 = 13
6.3 = 2 (1985 Superlight regatta sail)
6.0 = 11
5.7 = 2 (replaced by a new 6.0 in March)
5.0 = 4
4.5 = 4
4.0 = 2
You can see that I got 21 days with the 8.4 and larger sails. I am glad I had the big stuff to stay on the water PLANING for the extra days.
When I bought the iSonic, I was divided between it and the Futura, but I finally went with the iS for two reasons. One, I like the challenge of a more demanding board. Two - earlier planing, faster acceleration and potentially better top speed (Yes, I know, more than two reasons). It also fit perfectly into my quiver of sails.
Formula - 11.0, 9.2
iSonic - 8.4, 7.6, 6.6
HiFly - 6.0, 5.0, 4.5 (& my old 5.7 that I don't use often).
Formula 160; iSonic 111; HiFly Move 105; Tiga 263; '85 Mistral Superlight.
Maui Sails TR 11.0; 9.2; 8.4; 7.6; 6.6; Maui Sails Switch 6.0; 5.2; Maui Sails Global 4.5; 4.0.
Last edited by Ken; 16th June 2011 at 02:55 AM.