How far are you from your sailboat?
This is a older thread that deserves to be a Sailnet poll.
IMHO this is best measured in the time it takes to get to your boat, since traffic and mode of transportation vary widely. If you have to row out to your boat, count that time to. So it's door-to-door, or door-to-hatch if you prefer.
If you move her (as I do in the winter), use the average distance.