Pier 98 Marina has cheaper diesel, but it is a farther sail East into the
ICW, back in toward the Dupont Bridge. Its a small docking marina, so I do
not know if they would have transient slips.
http://www.safemooring.com/Florida_Panhandle237.htm
Sun Harbor Marina probably has transient slips, its way around by the new
Hathaway Bridge inside the Bay, going west on the ICW
http://www.sunharbor.com/