The water was surprisingly shallow, despite a rainstorm the night before. We scraped up plenty, but were able to move onward just fine. There were a few times I had to get out and pull, but it was just over sandbars.
Parking is simple. Just park at the park in Montgomery, and at the relating park in yorkville. Simple, quick, and easy. Starting after a dam and getting out before another means your trip is portage free as well.