Our March trip is from FL along the Gulf coast down to Brownsville, TX, the back up to Austin, TX, and then back to FL.  If anyone would like the Google map send me a e-mail off list to kc3ef at arrl.net and I will send it.  If there are any grids that are needed along the route let me know.  We can make small detours.  
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Dick - KC3EF
070 - 747