You’ve been staring at the rod rack for twenty minutes, running the same mental calculus every saltwater traveler runs in late winter: how many outfits can you justify packing, and what happens when the one you left behind turns out to be the one you needed? March makes the question worse. The wind is real, the species list is long, and your airline’s carry-on policy was written by someone who has never held a fly rod.

Here’s the uncomfortable truth most packing lists won’t state plainly: you don’t need four rods. You probably don’t even need three. An eight-weight and a ten-weight — two rods, two reels, one case — will cover bonefish, redfish, permit, smaller tarpon, and most backcountry species you’ll encounter on a March flats trip from the Keys to Belize to the Bahamas. But “cover almost everything” is a precise claim, and it only holds if you understand what it excludes and if you get the details right on line selection, reel sizing, and rigging.