When the pilot arrived over Toowoomba aerodrome he noted that the windsock favoured runway 29 and that the wind was strong. During late final approach he inadvertently allowed the speed to reduce too far and a bounced, heavy landing resulted. He applied full power to go around but a strong wind gust from the south (mainly crosswind) moved the aircraft sideways. The aircraft failed to achieve flying speed and struck the ground, left wing and nose low. When the aircraft came to rest, its three occupants left the cabin without assistance. They were not injured. A very experienced local pilot had landed some 20 minutes earlier and he said that he had nearly lost control in the gusting crosswind. The hangars are known to generate strong vortices over the eastern threshold in strong south-westerly wind conditions.