When I'm fortunate enough to have a double DH week, I tend to make my travel plans as early as possible to get the cheapest tickets. Deviating immediately on the front end. I don't deviate on the backend until the day prior, if the wx's going to suck (ala ORD last month), and I think I might get stuck in the field, then I'll go so far as to plan on taking the scheduled DH back to the planet and can'x my trip straight home.

Thus, if I do get stuck, overage and hotel rooms courtesy of Fred.