I do appreciate your words of help and encouragement.
BUT my current lesson horse has some “problems” (mostly minor stiffness) right behind the saddle. He most definitely does not appreciate me “using my seat” to give aids or control him. He sucks back, his back stiffens up more, and he will not relax enough to move well under me until I get my pesky seat bones OUT of the saddle.
To get a good extended walk, with him cheerfully reaching out to the bit and keeping contact, I have to get up into 2-point. Oh he will respond to my lengthening aids up to a point, but to get that marvelous ground covering extended walk I HAVE TO leave his back alone.
Occasionally I talk with my riding teacher about modifying my seat some. The problem is that my riding teacher REALLY LIKES how her lesson horses react to me not bearing down on their backs with my seat bones. She says that she really likes how I “use my seat to massage their backs” while all I am doing is getting my weight off of my seat and letting their back move without interference while my seat follows every movement lightly.
It may take a while with these lesson horses, but they end up really appreciating how I ride on their backs, I do not block the movement of their back and their back muscles, and they relax and start extending their stride because they are more comfortable under me than under other, often better, riders.
I get much better results on horses when I ride a strict Forward Seat with as little weight on their backs as possible. Inverted horses who suck back and do not want to move start relaxing and swinging those legs properly to cover ground faster than their usual 2 to 2.5 miles an hour slow slog around the ring.
Besides helping my sense of balance I am trying to use my HH so I can lighten my seat on their backs without having to lean so far forward. The lighter my seat the more willing the horses are to raise their backs properly under my seat and a lot of my current minor riding problems get better the lighter my seat is on their backs.
These are all elderly horses, they have years to decades of not so good riding in their past, plus gaping chasms the size of the Grand Canyon as far a properly picking up and keeping contact, as well as backs that are not happy with most riders. These are good lesson horses, they do not punish their riders for their faulty seats, but once they become convinced that I will treat their backs lightly they brighten up and start acting like they enjoy me riding them (I check with my riding teachers about that just about every ride.) Ears forward, striding forth fearlessly, legs swinging effortlessly under them, and calm responsive mouths are what I look for, and when the horses start using the bits calmly to “talk” to my hands I get really good rides even if the rides are just at a walk and trot.
When I grew up educated sensitive hands were considered as a basic requirement for a person to be judged as a good rider. My how times have changed, now it is “don’t use the bit, use your seat” and believe me I run into more back problems with horses now than I did during the 30 years or so that I trained or retrained my own horses using the Forward Seat and keeping my butt out of the saddle as much as I could and sitting as light as possible the times that I had to sit down fully in the saddle.
The problems with the bits are not from the bits usually, they come from the fact that the horses nowadays are rarely trained to have a proper relationship with the bit and that the riders are rarely trained to have light responsive hands. The riders are told to just use their seats instead and I end up having to retrain horses in their 20s who should have been trained properly to the bit before they were 6 years old.
The art of learning how to use the reins is to learn how to use them lightly and to immediately release the tension of the contact when the horse just starts to think about obeying the bit. This is why I can slow down and halt horses that are forging ahead just by twitching my little fingers in time with their stride. It takes me a LOT less energy to ride this way, and with my MS the less energy I use giving horses aids that they obey the longer I can last riding around without sitting like I am a sack of potatoes because I am just too tired to ride well.
Now as for balance, if I can keep my balance in the saddle without muscular effort I use my muscles a lot less which leaves me with more energy for stuff out of the saddle. I still have to take long naps after my HH rides but I will improve, I am sure.