I've got zero experience with Jackson kayaks, but I thought I'd suggest that if you pull the trigger, just go straight to the source in Sparta, Tennessee. It's about 15 minutes from this, the thing that helped draw the Jacksons to this area in the first place:



The first or second time I visited there, they just happened to be having the World Cup of Freestyle Kayaking. It was awesome seeing everyone tackle the rapids that develop at the base of those (and other) falls in high water.