We bring a medium sized "soft-sided" cooler loaded with ice no matter whether we're fishing from Kayak and/or on foot or by car. One of the best parts of the Bahamian fishing experience is being able to take advantage of the fresh seafood.
Our daily rations include the soft-sided cooler with 6 Kaliks and 2 sandwhiches plus a couple granola bars. Any food fishes caught immediately get filletted and put on ice. Our water rations for the day consist of at least 2 large fully frozen water bottles each. Any mature lipped queen chonch, chitions (gumboots), blue crabs/crawfish and snappers (muttons and yellowtails) we stumble across are harvested until we've got only enough for a hearty fresh fish dinner.
Hopefully will be on island for 3 weeks this April...got Cuba for 2 weeks before that though.