you can use reserveamaerica.com if you are looking for a state park.
Knights key campground - is a nice campground - have stayed there before - it was going to be turned into condo's before the bubble crashed.
Long Point Park in Melbourne (Sebastian Inlet) is a Brevard county run park and is very nice - right off the intercoastal.
If you want clear water - try Fort Desoto - they usually only allow reservations upto 6 months in advanced - you can look up there site and see what they have available to reserve online.
2011 Rockwood Mini Lite 2306 - Matt
2004 Dodge Ram 1500 Qaud Cab 4x4 with 35" tires and 3.92 gears, Dynatech Longtube Headers & Fabtech 6" lift + Superchips with shift Tuning
Nights Camped 2011 (37) - 2012 (16)-2013 (2) -2014 (5) -2015(0)
USMC 91 - 95 - F/A-18 Aviation Ordnance