Planning a trip across the gulf mid May. Plan A is to head straight across, Plan B is to hug the coast if the weather is a little iffy, and Plan C is to use the ICW as much as possible if necessary. We will be sailing an Allied Mistress 39' ketch, which has a mast height of 49'6". My charts show several bridges with clearances of 50', which will get our antenna and wind instruments. Does anyone know how accurate these chart readings are, or have any up to date info. on bridge clearances along the ICW, particularly in the Fl. panhandle. Thanks in advance for any info.