A break-down rod, compact plastic lure or fly case, and reel, plus the usual other items such as extra line, hooks, and so on, will fit nicely inside a cooler (or even backpack).
That cooler can also contain a smaller soft-pack or two holding your lunch and soft drinks. Come to think of it, eating your lunch in a desirable remote location is a third reason to fish this way.
To those of you for whom bass rule, there’s opportunity there too.
Historically largemouth and smallmouth bass alike were transplanted all across our country using the emergent rail system. Even today, you’ll find under-appreciated bass water (often unnamed on maps) adjacent to railways.
As access goes, this might prove to be a drive-in, park, then walk-in situation. Floating minnow imitations such as the fabled Rapala are all you really need to use in some of these summertime spots. Terrestrials, those buggy patterns imitating grasshoppers, crickets, ants and such, are a fly-rodder’s necessity. As always check regulations for the off-road locations you visit.
Worm. Bobber. Bait hook. Sometimes fun on the end of a four-wheeled ride is that simple.