Sounds like fun. You could go back to the Erie Canal and continue
down that. You could go back to Long Island Sound. And I would
think you could easily do Narragansett Bay in RI.
Going south- within one day's drive, you could go to Baltimore and do
the upper reaches of the Chesapeake (although neither the Chesapeake
nor Narragansett is a canal), or even go down to Washington DC and
cruise down the Potomac to the Bay and then go up to Solomons and
Annapolis.