Jake, I have three reasons. One is that it powers up to boat too much making it hard to control while creating a lot of drag once the wind is up. The second is wheter the mast can take the loads. We still have the Marstrøm Tornado alu-mast, and it's not the strongest one around. Third, it is hard on the spi cloth.
We spent probably about 40% of last year's 523 mile Tybee 500 running as high and tight as possible with the spinnaker. I will attest that the loads are quite high - most of the crews hands (including mine) really paid the price. The truely grueling fact was that the spinnaker
was adding a lot of drag for the power it generated - we were getting about an extra .2 knots out of it for all the work going into it...but we were racing!
