Before you guys go running off to stock up on FU wax from Brazil or similar products from down under, you should know that several american wax companies are already producing super-sticky waxes.
I recently bought a bunch of Bubble Gum's GU wax... and it definitely is much stickier than normal wax products. So much so that I don't think there's any way that this mystical Brazilian FU stuff could possibly be any stickier.
However, you should know that this comes with some drawbacks. Ultrasticky = ultragooey = wax gets all over anything it touches!
Does it work? Heck yeah, my feet feel way more "stuck" to the deck. Just keep your board/wax from touching anything inside your car/truck and definitely DO NOT use any of those cloth board socks! You won't like the result. Ha!