best thing to do is check out the boards in your nearest shop., 99% sure none of them are 1 stage rocker any more, they have flat or concave sections even ... and the carbon is so much more flexi than a wake board in most top models the rocker changes as you ride it. look at the tails on the 666 nobile or aboard and you can see the flex pattern alter towards the tip due to the carbon reinfocment layup changing.

Might be wrong but I think Underground do 3stage rocker, or something to that effect.

What about the " Litewave Rasta board " I think it has tripple concave rocker ?

You maybe looking for:

Hydrodynamic Rocker Line:
A conventional rocker with it's flatter centre section and increasing radius towards the tail causes the water to accelerate along its length as the distance it has to travel increases. This acceleration causes drag on the board. Nobile's hydrodynamic rocker contains most of it's radius in the centre of the board. The straight action enables the water to maintain it's direction of travel all the way along the bottom of the board making the drag from the water to be reduced to a minimum as it travels the shortest distance possible. For 2009, Nobile have increased the lift in the tips of the Hydrodynamic Rocker Line. This subtle change increases versatility (particularly when switching from heel-side to toe-side) and dramatically reduces unwanted spray whilst maintaining all other benefits the Nobile 666 has become famous for.

some people might not be aware but rocker and concave,etc. are completely differnet. i tried my wakeboard and like yomofo said it didn't work very well for me.

i like them 4 wakeboarding but they might not have a place in the market 4 kiting!?