Trucking would be the fastest but spring is prime time, so unlikely to find an empty truck headed NB.
Most logical route
to Erie Canal, Lake Erie, Huron to Michigan. (must get under 15.5' air draft)
Reasonable Alternative 1: Hudson
to Erie Canal, cut off at Oswego, the up Ontario
to Lake Erie, Huron to Michigan.
Reasonable Alternative 2: Hudson to Erie Canal, Cut off at Oswego, then jump across to the Trent Severn Canal and out at the north end of Huron.
Reasonable Alternative 3: Hudson to Champlain Canal, to St. Lawrence then up Ontario
with similar options.
Less Reasonable Alternative 1: The long way around to the St. Lawrence then similar to alternative 3.
Less Reasonable Alternative 2: South to the Gulf and then up the river system (upstream in a sailboat on the mississippi
section of the rivers is likely a non-starter).