Jigs and night crawlers should do the trick and it does not get much simpler. When I take the kids over we usually find a nice sand bar to pull up on. The kids play. I will throw a couple of lines out on the bottom and stick the rods in the holders. It does not take long for a sucker, smallie, sturgon or something to find your line.
The river is very shallow in that area. (below the dam) If they take a boat take it slow and maybe even plan on getting out and pushing once and a while when you loose the main channel.
I suggested crawlers because they are the easyest to keep this time of year and I dont know of a fish in the river that wont eat them. Minnows will work also and there is plenty of small mouth up there also.
Last tip. Make sure and check out the channels that go into the back waters. These areas can be very productive.
It looks like I might be putting in in Osceola saturday morning and heading north. If you see a polar kraft jon going by make sure and wave.