I did not know Rapid Craft even built a 21ft or they were in business in 1998...
They built a 20ft "Riot" and a 22ft "Twister" but I thought the last year they were building was 1996.
They made a Stoker-like boat for a few years also and a ski boat, "Hurricane" I believe.. but not sure of their size.
As far as I know they built quailty boats, Riots are very fast rough water lake boats. They used a Scorpion bottom and moved the dash back some 18 inches so they could run them w/outboards.