Foglost is the title of Hunter's bestselling 500-page novel. Both Tom and Gil are reading it. The book's protagonist is a man, Dan, a Minneapolis attorney - a litigator - in his mid-fifties, recently divorced and for a long time a heavy drinker with a preference for scotch. Remorse, regret and career trending toward downward spiral leads Dan to take a leave from work and buy a boat that he takes onto Lake Superior to "clear the fog." A sudden storm coincides with his drunken stupor to change Dan's course and life.
We learn most if not all of this when Maria asks Gil about Foglost, which he's reading when we meet him.
(Thus tweak scene 3, remove talk of Tom and Wanda's move, as that is expressed in scene 19.)