15-35 per foot, depeding on where you go. Harbor North is the cheapest I know of, at 15 per foot, at least that's what they charged a few years ago. North East and Elk rivers also have some in the 15-20 range if I remember correctly. Sassafras is in the 20-25 per foot range. Delaware City marina used to have a decent rate, not sure if they still do. Summit North on the canal varies, depending on boat length - 35 per foot if you are over 30 feet. Last winter I brought both boats up to Westville, NJ - Big Timber Creek which is pretty much under the Walt Whitman. Don't remember the exact price, but it was very cheap, under 15 I think.