Glenn Ashmore wrote:

SNIP
What I want to know is how do you intend to raise the mast off that deck
beam and what will it do to the RM? You are increasing the lever arm of
the center of force and putting it up higher into stronger wind. That
in combination with reducing the angle of the stays will increase the
load on the stays. But maybe the wide base of a cat will minimize that.


The added accommodation will substantially increase the weight of the boat,
increasing the righting moment. Is the existing standing rigging up to the
increased loads?