When Joe Hall was a 25-year-old plant manager at a machine shop south of Detroit, he returned home one day and made a fateful decision: He would move to Michigan’s northern forest — not far from the northwestern tip of Lake Huron — to start his own company, and hunt and fish in his spare time.There’s only one problem: Hall, now 51, is so busy running Hall’s Serv-All and its pumping, portable restroom, pipe cleaning and tent rental services that he seldom finds time for hunting and fishing. But he has no doubts or regrets. He figures he traded the
