You can mapquest 275 Front St
Perth Amboy, NJ 08861-4416 and that should put you right in front of where the boat docks.
Pretty much you'll be coming in from Rte35/Convery Blvd onto Smith St...take that ALL the way down to the end which is the old ferry slip, make a right and it's the first parking lot on the left.
Probably shooting for this saturday, but the conditions will be the final determining factor. Won't say the "W" word as it's a sure jinx.
He'll be receptive to the charter, just gotta pin down a day.