There are two senarios.

1) Where I am pushed in a chair by an individual. My tip is ready and automatic. $5-$10 depending on exertion. (I am also fat).

2) Electric cart service presents a tip problem. When I first needed the service I would offer and almost unanimously, at any airport offering the service, have the driver refuse the tip. Now I do not even attempt the offer for an electric cart driver.

ralph