I just got back from a trip to port A and the red tide is not a problem. The water is beautiful with a lot of bait in the first gut. Caught some nice fish and really did not work that hard, it was more of a break. I know there are others that know much more but I do look for areas where the tide line is closest to the water, in theory it should be a little deeper there. I see no reason to find the absolute widest area as long as there is room to get by. That said I would give myself a cushion of 20 yards or so from where I figured the water would be the absolute highest given the tide forecast. The local weatherman predicted significant rain later in the week. Have fun and post pics!
Excuses are the nails used to build a house of failure.