The wind stats for Maroochydore for 15.12.05 look interesting: (See BOM observation index)
15:29 19.0 17.3 90 NW 69 37 93 50
15:00 28.2 25.2 84 NE 22 12 28 15
The wind changed from NE 12 to 15 knots at 3.30pm to NW 37 to 50knots at 3.30.
Imagine having fun on a 16 before the wind changed

.