Review for LEGO set 6508 Wave Racer from Brickipedia
“The airboat is a unique design that never appeared again and no other contemporary sets featured similar racing airboats. 6513 Glade Runner from 1993 included another airboat which rather resembled a swamp boat such as the one from 6563 Gator Landing (1996). 1362 Air Boat... More (2001) also featured a different design.”
Full review at brickipedia.fandom.com