There is an interesting discussion on the A class site on the current rule on the use of foils. http://p078.ezboard.com/faclasscatamaranforumfrm2.showMessage?topicID=67.topic

It seems some in the class are feeling threatened by the moth class and are thinking they need to allow foils to maintain their cutting edge image. Tough issue for the class, on one hand the cutting edge status attracts people to the class, on the other hand this decision could render a lot of hardware obsolete.

I wonder if an existing platform retrofitted with foils would be as fast as an A cat designed from the outset to be a foiler? I doubt it.