The only comfort I can take from being forced into a chair seat is that is how the vast majority of horsepeople rode horses since the beginning of riding. There IS equestrian literature defining how to effectively ride and train a horse in a chair seat that I can refer to when I have questions.
I think that one of the difficulties with modern competition dressage is that they saw the movement of the MUCH freer horses ridden in variations of the forward seat (and how many English riders were deserting the chair seat) and decided that they, dressage riders, could also replicate this freer movement by changing their saddles from the older more Iberian models.
IF the horse likes the Iberian saddle I will do my best to ride humanely. Even though I will not be in a Forward Seat per se, I can get my seat bones FORWARD in the saddle, ala the Duke of Newcastle James Cavendish, emphasize moving my hips so that I do not block the movements of the horsesā backs, and use Forward Schooling and Forward Control.
Right now my body is just too weak to ride a true Forward Seat. I just get tired too quickly adjusting my balance to the movements of the horsesā forehands.
During the lesson I noticed that Cinnabarās back was stiff under and behind the cantle of the saddle. I was using the Total Saddle Fit Squish pad, but I think Cinnabarās back would have moved better using my Fenwick Western pad which also covers the horsesā loins and has the therapeutic far infra-red radiation easing the horsesā loin muscles.
I got so totally exhausted from my lesson yesterday it was scary. Right now I am considering that yes, I am an older, littler old lady and maybe I should ride in the Spanish saddle until my endurance and muscular strength improve. I have been moving around so much less since I fell off three months ago that my muscles have lost a lot of the pitifully small amount of strength I had built up over the last few years.
Yeah, maybe my Talavera Portera saddle with my Fenwick Western pad will make Cinnabar happier since I wonāt be sliding around as much in this saddle.
A woman can hope.