I was fortunate enough to have a current CT surfer's ex personal board in to repair. I studied it in detail and created my version of it.
Single concave from nose to tail and a wide tail block, see this board handle everything the ocean can throw at it.
I was lucky enough to be given a current CT pro's ex personal board to repair. It was made by a big prominent label, prior to the release of the actual model. Hopefully I can throw as big a buckets as this home grown Aussie brute!