The skeg is designed to help in tracking, I don't know how it could help in stability, but you could put on out-riggers for stability.

> Currently building Great Auk and am interested in stability potential of a
> retractable skeg. I have used a centreboard/trunk setup in a 17' sailboat
> and wonder if this concept would aid in stability of the kayak. Where to
> place, size, daggerboard or pulley operated - which way to go? Nick, your
> book is the best I've seen and read. Many thanks.