Perhaps some kite guys might help you..me not one.
but for locations kiting in southern Tas is Cremorne beach, clifton beach, Cremorne lagoon, Mortimer bay, Goats beach, Marion Bay, Carlton beach and park beach.
All depend on wind direction for the day.
There is not a massive kiting population in Tas so bonus for uncrowded beaches.
Tas frontal winds from west can be very gusty , seabreezes from south east/East more consistant.
Thats the Southern end ( Close to Hobart).