This was my first foray into an inflatable boat tail.
*A wooden box hung from L-brackets slung over the tailgate.
*The 'long' part of a bean-bag chair created the envelope,simply stapled to the box.
*A 12-VDC ventilation fan from a Westfalia Campmobile was the prime mover for inflation air and tension.
*A simple,clip-on umbilical power chord exported current from the host vehicle's battery.