When to Call it a Day?

You know it's time to leave for the day when . . . your the screws in your bindings start to work themselves loose, and it's already 4pm.

I had already had a full day, and was ready to go down a new trail when I shook my front foot. The board wiggled. Oops. I didn't have a screwdriver with me.

What to do? Make it to the base, and call it a day.