Where in Mexico are you going its a big place? On the west coast most of the fishing is done just offshore within a couple of miles where the water is clearer or where there are features and tide rips. The offshore boats go quite a way out for the bigger game fish. When I was there the boats tended to troll rapala type lures in the bay of Banderas I saw huge bait balls nearly everywhere I went and jacks thrashing the surface, amazing to see. Tried for them off the shore and it was a waste of time. Squid was quite good for catching snappers/ bream up to about 3lb off the jetties. Great scrappers on a light rod. Most of the boats are out for first light.