A couple of suggestions:
1)Have it at another time of the year.
2)Charge a $50 a day entry fee
3)advertise at every possible venue you can---meaning handouts at each and every tourney you can find across the state and make sure a flyer is at every tackle shop.
4)Get some more river fishermen involved---maybe on a board to offer help and suggestions.
No offense to KRA, but they know restuarants not bass tournaments. The only thing they know is what they were taught from the tournament out in Arkansas.
5)Make sure each and every weigh station measures "legal" fish
6)Make sure that the payouts are more clearly stated or in more detail. It was a bit deceiving last year and I am sure it was this year because nothing has changed.

These are just a few ideas for starters---I have several more.