Helmy said..
probably been stored wet in the cover, with imperfections in the layup at the tip, allowing moisture in. add to that the Qld humidity, and you've got a bubble.
Melbourne weather comparison at the moment is water temp of 11c, air temp of 13c, with a s/w breeze straight from the Antarctic.
I should have such problems as yours
Tomoz i'll b in the five four ! hood on and trying to enjoy that 11 c temp ! The wind is goin to back off and swell 4-6 feet ! Locals only ! Apparently ! Government says so ! ??