here in the 1000 islands you can still travel without an I-68 provided you do so during office hours and you stop to check in.
I think the hours are 8am to 6pm. After that you must have your I-68. The police have a total of 4 boats patroling between Brockville and Kingston with the RCMP kicking in an additional 7 vessels for home land security. HA HA
Give me a shout if your in the area (2 miles from international bridge)