Have to say shifting to a taller mast is a good thing - you shouldn't think it's an advanced option!
There's times when I know I would have breached on a standard mast flying through the chop and backwash troughs. You also get just a bit more reaction time to push forward as the acceleration kicks in. There's probably buckets of stiffness benefits thrown in as well, although it comes with a weight and draft penalty.
Heres a sequence at Foil Bay - on an Iwa at the limit of keeping it under water.










cheers
Brian