Personal experience with this. Pretty extensive cruising of a GP-14 as a kid with father and a 2 hp model. The value of the motor was mixed. It made possible getting out and exploring the oppressively still and humid Chesapeake in July.
We raced it a lot, too. Boat had a bolted on bracket. Mainshieet would catch on gybes. "Dad, let's take that ^$%# thing off." When I became more in charge, it came off. Still cruised. Chesapeake. Just put up twin headsails and tacked downwind. Out sailed 30