I grew up fishing from a 16 ft Trim Craft Hustler the boat is still in the family and going strong after 20 plus years, its built like a tank. They where manufactured in Richards Bay but the blokes name slips my mind.
The 21 foot cats where aimed at the commercial market I never really saw any recreational guys using them but back then a 21 foot cat was considered a monster! I'm sure there must be some guys RB guys here who could shed more light for you regarding ride and build quality.