That's a sound Zombacalypse survival strategy. I wish I knew the source, but this came to me anonymously.
The idea is you distill down zombies to make the 'bio' diesel to fuel your motors, and you live and farm on the towed barges.
Some think .50s are overkill, but would be useful against against uninfected pirates coming to do you ill. Zombies would be retired with the crews personal arms.
Then you just tool up and down the Mississippi in relative safety, watching out for low bridges and ambushes from the shore (bad guys would have seen you go back and forth and eventually work out a plan to try and get you.)
I'd want more boats moored alongside for greater mobility and an ability to divide my forces for great tactical flexibility and as precautionary escape methods.
Long term viability? Eventually you'll have to settle somewhere when the equipment breaks down. Eventually your barges will rust. Eventually the Mississippi itself will get angry and cause a foundering event. But with luck you could go a long time. Maybe the zombies will thin out a bit over a few years. And you'll have scouted the best place to may settle down by then and might even make it back there.
"You never select a shotgun as your primary anti-zombie firearm. It's great for onesy twosey, but zombies travel in hordes. The reload time is onerous, and the ammo, while effective, is heavy and bulky and short ranged."
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