Hi Bender,
Being a fellow interstate visitor to the pit and only sailing there a couple of times there this is what i have found:-
Don't rig too small - especially trying to get going on small board at start of course - wait for a gust to get going.
Don't rig sail too flat.
Ride close to the bank as you can and go down the course as far as possible to get best speeds.
Watch out for sailors coming down the course - they come very close to bank.
Ride and use familiar board and fin combo and tune sails before using.
At the end of the course look out for anyone coming behind you and go wide before stopping at the bank (i almost hit the bank a couple of times).
Watch out for any kiters - i almost got taken out

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Watch out for those Pit Crew and some interstate guys - they have very fast gear and fast gps's. They can sail too

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Take any advice from the local's - they are very helpful

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Have fun, go fast and have a great fortnight.
Cheers,
Carl