my f2 board has gone soft in the middle area between the front footstraps to the back one.(its like a bouble across the area wich is soft and has air inside).

what does it mean? can i still windsurf with it? will the board brake while windsurfing?

take it to steve stratfold, he does repairs. contact w/surf perth for his ph.number.

if u keep using, it will crack as no support and leak.

Have a look at this link from the Board Lady. It'll explain what has happened, and how it needs to be repaired (before sailing it again)

boardlady.com/softdeck.htm