Gus Lombardi, 9, Syracuse, poses for a portrait in his 1976 Chris Craft ski boat named Gus’ Minion on Saturday during the 55th annual Antique Boat Show at the Antique Boat Museum in Clayton. Sydney Schaefer/Watertown Daily Times By MARCUS WOLF mwolf@wdt.net CLAYTON — Nine-year-old Gus Lombardi sat proud in his yellow 1976 Chris Craft Saturday, showcasing it alongside dozens of antique boats rocking in the slips at the Antique Boat Museum for its annual show. His 17.5-foot long ski boat named Gus’ Minion, derived from the cartoon creature from the movies “Despicable Me” and “Minions,” glowed in the sun that…