Thank you for your response. And thanks for giving an example of your own experiences with Aikido and horse-riding. I think it is worth while to explore this a bit further and will have a look at the book you mentioned. I am interested in extending the Aiki experience beyond the tatami, and horse riding and Aikido seems like an area where more people are apparently involved in then I was aware of. Which is good!
Always happy to talk about two of my favorite subjects.