Scott,
I've solved all your problems (you can thank me later).
When you get here, you trade in your car and buy a motor home. (
http://www.robertswinnebago.com.au/). Naturally, it is big enough to store your gear inside and has an on-board generator and air conditioner (temps in Melbourne can get to 42 deg. C in summer in daytime ('

') and 30 deg. C at night).
You then drive to the City Of Bayside offices, buy a yearly parking ticket (about $160) and park the motor home at Green Point (cold running water and toilets available). ((On Google maps au, search for "Brighton Beach Gardens, Vic". Grab the map and move it to show the locations that follow in the text below)).
To go to work, cross the road to Brighton station and catch the train to the city.
Before leaving work, check the winds on Watkins or Seabreeze.
Finish work, board the train, get off at Brighton, walk across the road, get into the motor home, hang up business suit and decide what to do:
If the wind is northerly, sail at Green Point (lots of sand on the beach).
If the wind is south-westerly, drive north to Dendy Street and sail (2 minutes from GP. (lots of sand on the beach).
If the wind is south-easterly, drive south and sail at Rickett's Point South (Beaumaris Life Saving Club, 8 minutes from GP), Mentone (Naples Road, 5 minutes from Rickett's) or Parkdale Yacht Club (3 minutes from Mentone). Lots of sand on all these beaches.
If you need more guidance, I've got plenty to give (some would say I'm full of it ('

')) so you can PM me.
Knowing that you'll take this advice without question, when I see the motor home in the carpark I'll come over and introduce myself.
Finally, don't worry about the sharks that Croweman has given you info about (you'll learn who to trust when you are here). Hardly any windsurfers have been taken here and most of the fins that you see when you are sailing are dolphins.