Cross over board? Ideas?

This board here http://www.swaylocks.com/resources/detail_page.cgi?ID=196 has caught my eye.

Yes, it’s a bit flat for what I want to try.

Yes, 2" of rocker on each side seams to be what I’m shooting for.

Here is the blank I’m thinking of carving up. http://www.foamez.com/store/productDetails.cfm?prodID=241&prodIDCat=41