Rob I used to ride that river all the time, and a bunch of my riding buddies are still up there. The fish really don't bother while you're riding. Wake boats don't excite them that much. It's shallow water, aluminum johnboats, and outboard motors that really get them going.
Having said that, I have seen two people get hit while riding, but that's over three seasons averaging 2-3 days a week from mid march to late oct. so it's pretty rare.