Driving for Dollars deductible?

[Paul Bowers]

I'm starting to track my mileage via the Mileage IQ app and wondering whether driving for dollars mileage is deductible.  If so, does that make virtually all my mileage deductible?  I can't remember the last time I drove anywhere that I wasn't scouting for properties, writing down addresses, etc...  Where do you draw the line between just driving and driving for dollars as far as deductibility?