Actually, as you can see in the early 80's maps and pics, White Lightnin was not removed for the lame wave pool. The wave pool had been there for several years and stood side by side with White Lightnin.
Smurf Island was a walk through area with small mushroom houses and other Smurfy artifacts. There were not any rides, but there was a small ball pit area at the entrance. To access the island, you would actually have to walk across the Carolina Sternwheeler when it was docked. The snack stand served smurf blue iceees.