March can be a beetch for weather, Daniel, probably one of our worst months. That being said, fishing is VERY good prior to a cold front, and VERY bad for the 2 days following the front. So watch reliable weather forecasts for our area starting a couple/few weeks in advance of the trip, when the forecasts become more accurate.
Inshore species (can be a real beetch to get offshore that time of year) start to feel the pressure changes prior to the front's arrival, and feed heavily...trout, reds, snook, mangos, juvenile grouper. When the front passes through, it messes up their equilibrium, and it can take a good 2 full days for them to get back on their feed. During this time, you can bonk a red on the head with a shrimp or fiddler, and he'll just look at you...