I don't know where Destin is - but this thread over at Sway's has a few recommendations for blanks in Florida: http://www2.swaylocks.com/node/1027766
Readers digest version: Fiberglass Florida and Holliday Surf, plus Inspired Surfboards is selling multidensity parabolic's.
Mike Daniel of Coil Surfboards out of Florida is an amazing shaper and just an all around great guy, he won't try and spam you either. You can email him at email@example.com
and explain your situation and location and most likely he can point you to someone who is selling blanks, if the thread above doesn't pan out.
Hope that helps and good luck!