Truck camper at the beach
Our truck camper fits entirely inside of the 8 foot truck bed, so we actually have a small "porch" behind the camper.
I do think your idea of the 3 or 4 foot aluminum framed porch/deck is a great idea. It shouldn't be too hard to design and build.
We use our camper on the gulf coast to fish at the beach. Good times!
Wringing the most out of life, above and below sea level
2019 Entegra Insignia 40B2 Motorhome
2016 Livin Lite Ford 6.8 Truck Camper