Its fine on the aluminum mast and a CompTip. No bow spreader needed. Yet to hear of an issue. The Euro guys love the spinnaker... I'm fine with it too except for messing with the class rules and splitting the fleets, so not in favor for class racing with spinnaker.
We sell the kit in the US and have for years. No bow reinforcement has been needed on US boats as far as I have heard. May have been an issue with Euro built 16s only.
It is fast off the wind. We did a shoot back in 2004. They were making fast tacks and gybes to have close passes by the photo boat.

And Jacques?... crazy man on a 16 tiller! He looks up and is right on course for the photo boat. Kevlar thought he was a gonner! Its a nice shot of the hardware layout though!
