If you sail Westlakes you just need to pick the right spot to suit the wind direction.
Northerly - Bower road end of lake by the dragon boat club.
SW-SE - legtrap (Dotterel Drive) has nice lawn and toilets
SW - Tiranna way (dont go here on a s-se as its gusty due to footy park and houses interferring)
S - Main rowing lake, providing there is no rowing on, unless you like causing a bit of chaos.
That said, yep its still a lake thats gusty due to effects of houses etc but the above guide is what i use when i take my daughters to teach them.
other than that the suggestions from Divaldo, JN1 and legless are all great to in the right conditions.
Good luck with your learning