Where on the lake do you sail from? I went for a look the other day, and it must've been the wrong spot (north eastern end carpark?!?) walked out about 30m and still not knee depth, although I wasn't aware that it was tidal.
As for Pt. Henry.....I hope to spend some time there this year, got my hands on some 'cheap' accom. in Geelong, a unit with lockable garage! woo-hoo!

as opposed to caravan pk cabins all last year! Should be able to store some gear there, 'stuck' in Geelong for 5 days (full-time student), but end up with a full day off on thursdays, and 2 half days!
Just to add, where around Geelong/Torquay is a good spot to sail for an inter. to experience a few waves, and not 'get in the way' of the hardcore guys?