Gruezi, mate I know you just want to be Uber cool and go unstrapped, and you will have a melt down at the finish line when you scream across in second place, beaten by metres to a strapped kiter. Nick, I know you will be pulling little chop hops jumps all the way across Gage Roads with tiny uber grabs thrown in for the helicopter camera men.
My advice to go fast Nick and be coooooooool, go unstrapped, with super lite epoxy surfboard around 5ft and 22" wide, no rocker may be a Firewire sweet patato, the smallest fins you can find, maybe even use as a twin fin so take out rear fin, no wax, no leg rope and just wear board shorts, bare chested, with the compulsory emergency flare strapped with gaffa tape to your manly thigh.
Nick, maybe....... just one last thought, don't use a harness at all, and race unhooked ......

Nick you will be "RED BULL"