Thanks for the kind words everyone, they are most appreciated.
Greg - yep, just head to the boat launch by the Marine Unit. I'm usually on the stairs on the west side of the lagoon, until they put the docks in. Best to go in mid afternoon, lighting is perfect coming from almost directly behind you until the sun goes down.
I was only shooting with 300mm and there was some cropped involved - you should have no problem with a longer lens.