They are braver than I'll ever be I saw on the local Cincinnati news that they have issued a small craft warning about all the trees/stumps/tires/logs/ that are floating down stream. Good Luck Guys. CATKING
Last year the river was at 40 foot and they still raced, couple of boats broke props and I know of a couple that lost outdrives hitting the floating tires with rims attached, seems these guys race on about anything.
Some guys went diving for the props, major bucks because there blueprinted and balanced.