Ditto Hickory Hollow is a nice place.
FYI, Shell Knob has the only wake boat dealership, with boats (lots of em), on the shores of the lake (MasterCraft), and includes a full sports shop.
http://www.williamsskiandsports.com/aboutus.asp This spring the lake was high and, Hickory Hollow was not the southern end of the Kings arm, nor was MO 86 south of there, but Romp Hole access in Ark. (for fishing for sure).
The whole region down there is worth exploring.
http://www.arkansas.com/lakes-rivers/river.aspx?id=7 Get a hold of Tim Ernst's "Arkansas Hiking Trails," or any of these other guide books, and really explore some amazing country.
http://www.cloudland.net/trailguides.html Don't forget the tick and chigger repellent.