Yeah the gas was a bit excessive, we had to remove the rear seat and take a couple 5 gallon fuel cans with us to make the stretch between fill ups. Well worth the cost of gas though, really fun experience. There was a lot of debris at times, this was the river that flooded Nashville several months ago, so there's more than usual. Along the way we also saw docks hung up in trees (some with boats still attached). Depth wasn't an issue as long as you paid attention to the buoys, a lot of barges use the river so I wasn't to worried.