Sharks are most prevalent in the surf, so that's where you'll want to fish. Large live bait is best but cut bait and fresh dead will work great too. I've really good luck on freshwater fresh dead shad. The bigger the better.
You're limiting factor will be the wind. Spring time is the absolute worst time because of the wind and rough sea/surf conditions. July through October would be the best time frame.
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Mike
Buda/Port Aransas, TX