Kentucky Lake. Lake Barkley. The Ohio River.

Those are great for bowfishing.

In fact the Bowfishing Association of America (BAA) will hold it's "World Shoot" on Barkley on July 28-29 in Kuttawa.

The United Bowhunters of Kentucky is holding a shoot on KY Lake on May 5-6th.

Campbell's Outdoor Challenge is having it's Bowfishing Challenge on June 7-8-9 on KY Lake.

Go to this link: http://www.unitedbowhuntersofkentucky.org/officers.html
Mike Whelan and Dan Richeson both should be able to give you some good advice on bowfishing in KY.