Personally i've never been sold on the 20% rule. I think someone pulled that figure out of a hat and made it gospel. Like the old food pyramid which turned out to have no sound basis but the world based their food intake on it slavishly.
The majority of horses these days are worked way under what they are capable of, and that without 'overworking' or over burdening them.
Even school horses who probably do more than most, certainly in a well run establishment, are not usually overburdened.
So for a one hour lesson if a rider is heavier it is not going to hurt a horse of reasonable fitness, and you should always be making decisions for each individual animal within your daily plan anyway. So if one horse seems to have worked too hard in one lesson then rest it longer. Quite often people fuss about the weight of a rider but the horse hasn't even broken a sweat.
Comes back to basic common sense and an awareness of your horses.
I just worked your weight back to kilos and you are lighter than my ideal weight! I don't see that height has much to do with it. A sturdy pony would carry you easily so a horse would.
I feel too big on a spindly light horse, but it can still carry me. My thoroughbred is used to a lighter rider than me (for racing) so I think he got bit of shock lugging my weight at first
but it is certainly not an issue, just a matter of getting different muscles fit.
is right about the knights and armour. Wouldn't the pc brigade have a field day today!!
just thinking about that. You have two people the same weight who ride in the one saddle. One person is taller than the other. The saddle is in the same place so technically the broader person is going to spread the weight more !! maybe its tall people who need to stop riding
. . . but I see what you are trying to say. I think if the saddle fits the horse and rider and is well padded, it is mostly about fitting the right horse to the rider. After all the rider is there for a lesson to learn not to bump around!