Pilot Operating Manual which came with the 1978-80 model Decathlons commonly found in the Melbourne area states:
Either wheel landings or full stall (3 point) are permissible. ...... In high gusty wind or when a crosswind exists, a wheel landing is recommended .....
The handling notes provided by the local flying schools contradicted this effectively prohibiting wheelers (can't lay my hands on a copy quickly to quote it).