I agree with tennfisher. The water is so deep you aren't likely going hit anything but the large cruisers want to view the leaves too and come from all parts of the country to do it. Last year I saw cruisers from VA, MI, OH, and other states this side of the mississippi river. They have boats ON their boat. Most of them create a normal wake and are courteous but a few like to trim down for laughs I suppose. I've even seen a cruiser rock the Gorge Explorer - he was pissed. The inconsiderate boaters don't care about anyone except themselves and won't respond on any VHF channels.
Since the river is narrow those wakes take only a few seconds to hit you and don't dissipate like they do in a lake.