Known for his determined work ethic but also for his temper, Boileau was an established minor league fixture, playing with the Indianapolis Chiefs, Seattle Totems, Hershey Bears, Los Angeles Blades, and Fort Wayne Komets.
Despite a relatively strong on-ice performance, the Red Wings were unable to find a roster spot for him beyond that season and he never played in the NHL again.
He continued his career as a head coach, beginning with the Fort Wayne Komets, winning the Turner Cup in the 1972–73 season.
Marc went on to coach in The Netherlands (Kemphanen Eindhoven and Tilburg Trappers) and France (Amiens Gothiques) to finish his career.
They had 5 children, Maryse Juliette, Claude Marc, Jean, Pierre Bernard, and Luc Dalton.