Hello and a warm from Boston, Massachusetts. I have a large paper clamp hanging on the flap of my outer apron, it holds it down on my UK Basic. I wear my UK at kilt waist, so the snaps do not really fully cover the need. The fact that the under apron has a deep pleat does work to protect things well when the outer apron floats up. The most anyone sees is a little more of my fat legs. The only time the wind did get me was on the summit of Mount Washington in New Hampshire. Fortunately it was an all male kilted hiking group, and we all suffered equally.