Still learning, but i believe water movement (tidal or drainage choke points) and salinity (lack of freshwater influx) is crucial. Other than time on the water and sharing info to get info from better fishermen, i use google earth alot, and the stuff below..
Like most guys, i fish when i have time, so if its safe and im not tied up, im going.
tides4fishing.com (see below) is one resource i use, it includes solunar, tides, weather, wind, everything really.
http://www.tides4fishing.com/us/loui...ghthouse-wharf
For when i am on the water and those sudden summer storms are around, the very best ive found is the RadarScope app ($10).
The thing i look at most when planning is salinity (see below)
I-10:
http://waterdata.usgs.gov/nwis/uv?site_no=08017044
TURNER'S:
http://waterdata.usgs.gov/nwis/uv?site_no=08017095
CAMERON:
http://waterdata.usgs.gov/nwis/uv?site_no=08017118
Another is the NOAA weather (see below)
GULF W.:
http://www.nws.noaa.gov/om/marine/zone/gulf/lchmz.htm