We carry a 10' Achilles inflatable with a roll up aluminum floor. The bag just fits between the hitch and tailgate of our RAM short bed. I carry an 8HP Yamaha 2 stroke in the basement. I went with the 2 stroke Yamaha because it was a 2 cylinder, had the best power to weight ratio at the time I bought it (70 lbs), was light enough for me to get in out of the basement and is powerful enough for the boat to plane with two on board. Ours has never seen salt water I would definitely flush it after use if it had.
The Achilles is a great little boat but not the cheapest. Japanese built, Hypalon fabric, very sturdy and well built. While the roll up aluminum floor works well is very convenient, as I get older I am starting to wish I had gone with the inflatable floor which makes the bag about 20 lbs lighter.
I use a 110V Coleman inflator to get most of the air in and then pump it up as hard as I can with the foot pump. If we have no shore power, I use my generator or inverter to power the inflator.
Deflating is easy as the entire valves unscrew leaving large holes for the air to exit.
For launching I installed a set of these
Dinghy WheelsFor shorter distances you can wheel it around like a wheel barrow. If we have to go farther, I sit on the back of the truck holding the bow handle on the boat and the wife tows me. Very slowly.