It takes me about 20-30 minutes the first time of the season -- mostly
figuring things out again and working against the stiffness. After that,
it's 10-15 minutes to set up or down

all things in a pile on the shore, yup.

On the deck on my boat with seats, transom down below along with bolting
hardwar, plus engine on the rear pulpit of my boat, plus the gas tank for the
o/b engine, plus safety gear, plus rigging the harness to lift the Porta-Bote
off my boat, plus lowering the bote, plus all else, well the time is a mite
longer than on shore.