Hi Pete

My guess is Grob,s recomendation on the basics of design is better,--Skene,s is very dated ,-got it more than a few decades ago

On over 21 ft cruising cats ,- H-makes a 21 sport ,buts its heavy ,--The Stiletto 23 was a nice platform with not quite enough hull volume for a berth though .
The real problem getting performance in a larger cruising cat is having enough sail area ,-but then a capsize and righting become a concern .

A modified Supercat20 or Arc22 with a smaller cruiser type or reefable sail plan may be worth while ,-Bill designed the neat stay extender lever hardware to solve the righting problem ,--have a SC 15 for the kids ,--it works great .

You might find a used one very reasonably that needs sails or minor repair , Maybe a slighter shorter mast and sail plan on it would make an excellent fast coastal day cruiser that numerous people could sail without being overloaded .

There are some newer mid sized cats on the market ,but extremely expencive .

hope that helps .