Thanks guys, some helpful comments and the consensus is to go custom.
I have a Katana 6' 4" surfboard for paddling - I'm not good at it but its not the board's fault - so I will give them a call
@SugarQube - Bali was good thanks, wind was light but great waves. You're right, that's why I am asking now as the Cab felt pretty heavy and slow. There were some French guys with custom boards there and I tried one out. Felt looser and much snappier, even to a hack like me.