It is an unbelievable pain (having just gone through the process myself) and unfortunately I don't think there's much you can do to delegate the pain, short of giving someone unlimited power of attorney. Even then, the worst part -- the day-to-day uncertainty -- won't go away.

A good buyer's agent can help to some extent, but the mortgage process is the real time sink. If you're a 1099 kind of person and you're not paying cash, your life will pretty much suck for a couple of months.