Aight, since some of y'all want the rapids area to be transformed into a Lowcountry/swamp type area, I tweaked my Pirate Island concept into something more appealing:

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This is Lowcountry. The attractions consist of:
Jalopy Junction: The is the anchor attraction of the land. It's a throwback to Hillbilly Jalopies, with a new storyline:
Every year, the Lowcountry hosts a jalopy race. Beat-up cars from across the Carolinas, on their last legs, are given one last chance to shine by taking part in this competition. Fly over swamps, dive under hollow and fallen trees, and say hello to Carolina wildlife on this one-of-a-kind, family-friendly antique autos ride.The ride would have two side-by-side tracks, with multiple two-seater cars, and part of it would extend over RRR's retention pond and into the storage areas by Fury. It would be similar to Tomorrowland Speedway/Autopia, but with better scenery and theming. Some of the wildlife (animatronics) would consist of alligators, snakes, bobcats, and deer. Essentially anything you can find in Eastern NC or SC could be included. I also think part of the section near Fury could be enclosed into a show building, themed to an abandoned fireworks factory, just to give the ride something more to look at than just trees and animals.
Twist 'n' Splash: At this point, I'm just beating a dead horse with a stick. The name would be
Powder Keg: Barrel Blast as a throwback to the park's log flume.
Lowcountry Canoes: This would be another revived attraction, as the park used to have an attraction named
War Canoes in the Indian Thicket section. The canoes would travel across the swamp, completely surrounding Lowcountry, and traveling under walkways and Jalopy Junction. The wildlife found on Jalopy Junction could also be spotted from the canoes. Each canoe would have up to 16 people, and there would be a guide at the front of the boat.
Interactive Playground: So part of this would be a dock-like structure, where guests can pretend to fish (mounted fishing rod that pulls up a prop fish, maybe a rod that pulls up an alligator). The two boats on top of Chickie's and Pete's would be relocated and incorporated here. The dock would lead to three islands, connected by bridges, and each one would have some sort of interactive element on it. This is the Forbidden Frontier-style attraction, but in a more compact and smaller space.
Restaurant/Gift Shop: The restaurant would be similar to a cracker barrel, but with the decor of a Bass Pro Shop.