What I have right now is a climbing harness which I suppose is meant to be worn around your legs and waist, but fits well also around my arms and chest. It came with a six foot webbed tether which I extended about two feet with some line. If I tie it directly to the spinnaker hook on the mast, I can reach from the cockpit to the bow.
I know it's not the ideal set up, but it's what I have lying around for free. I'll look for a quick release shackle. If I could find a way to release if I were being dragged, I would be sure to use the harness consistently.
The admiral recently declared the Chesapeake her arch nemesis. She's good about going sailing with me cause she knows how much I enjoy it. But she gets seasick in conditions when the sailing just starts to get fun. I'm going to try to do more river sailing with her on the Rappahanock, so I can get some good sailing in with her aboard. But it looks like I'm going to continue to primarily single hand the boat.
Gemini Catamaran Split Decision