I built one based on the traditional dimensions this year for surfing (5'11" by 23" and 3" thick with a thick S deck) Havent tried it kiting yet....It fun to surf and I am a tad bigger than you average kiter/surfer. I have a feeling that the wide tail flat rocker and fat profile and wide nose may be a handfull if the wind gets up but for sub 18 knots I think it will go ok.
The Mini simmons shape in general is similar to a choptop or north nugget, anything will work behind a kite. Depending your height/weight and skill (surf) level you could refine the traditional shape by pulling the nose and tail in a bit more and maybe a bit more rocker in the tail and going as short as possible?
Couple of photos of my fat betty. cheers