i rode the '06 and really liked how it handled without the fins. great bite when you want it, but slid easy when you wanted it. it is very wide and that seemd to make it very stable.
i put those crook fins on and couldn't tell a bit of difference so i took them back off. they just looked like they would trip you up.
as far as the rocker goes, for '06 it is listed as progressive. and i always figured that was a fancy name for some kind of continuos rocker. i see for '07 they say progressive 3 stage, but as far as i know, the board was the exact same cut. all i can say, is it popped more like a continuous. it never sent me up like a 3 stage, and since i had a pretty small wake, i felt i needed a 3 stage and got rid of it. i hated to do it because i really liked it other than that and my wife did too. now i have a new boat and a new wake and it would probably be just fine.