www.windguru.cz/15753Dial in "Sandy Point, Vic" in google maps to find it. Drive to Sandy Point. Ignore the side roads on the right that lead into the village and keep going until the road comes out on the beach. Hang a right, drive down the beach for about half a Km (assuming it's not high tide) and park up next to everyone else.
Too easy. Not a lot to hit or get into trouble with, great place to get good. Yeah, it's a read speed sailing place, but as long as you're not too close (I mean less than 15 metres) from the beach where the speed kids are going fast you'll be fine - you'll quickly work out where's a cool place to be and where's not. If you're not sure, just ask. Everyone who sails down there is really friendly in my experience and only too happy to help.
Enjoy - it's a great spot!