Suggest you look at Shell Point in Crawfordville about 6 miles west of St Marks. This is a sailing/boating community 30 miles south of Tallahasse and has a one third vacant marina. It has hosted a number of cats. Also consider Carrabelle
further west but there you have to contend with river current
and it is more remote
than Shell Point car wise. Also check the historical stats on hurricane
strikes by county when making your decision. Good luck.