My Texas Grand Folks towed a small aluminum boat with a 7 to 10 hp outboard behind their car. Grand Dad had a wall tent and a bunch of canvas folding directors chairs, cots, folding tables, Coleman lanterns and stove along with ice chest, food, cookware, etc.
He had thought it out pretty well. The boat sit in the garage ready to go except for a few key things and was covered with a canvas boat cover. So when he was ready to go he loaded his gas cans for the boat motor, live bait, and Ice Chest with food.
The trunk of the car was reserved for Grandmother to load whatever she wanted to take.
But a small boat can double as a utility trailer quite well.