The call for Sunday will be much easier to make this time Angie, Dean has been actively advising late Sunday nite fly outs and most people I know have booked late flights Sunday, so it's more likely to be a real option this year.
However, I think the option would only be taken if Sat was a complete dud and even a delayed start time wouldn't improve things. Calling a Sunday is very risky, then you have no other options if the forecast turns out to be wrong, the race then has to run in whatever conditions eventuate. At least the Fremantle Doctor is pretty consistent, unlike a lot of other race locations.
Even if Sunday turns out a big Southerly and you still race Saturday, think about the fun to be had running the coastline Sunday if you're up to it providing you didn't over do the beers Saturday nite.

see ya there.