Hey if us girls can talk about keeping the mam's safe in a sports bra when we ride to avoid black eyes, the guys should be able to discuss the twins who are tired of being banged around.
I asked my brother, who sometimes rides my horses, and he said "Just tell him to stay off your ****ed draft". So that wasn't very helpful.
I would say, if you ride western maybe try getting a gel tush cush that you can put on the seat? Do they make tush cush's for English seats? Beats me.
I would think wearing supportive undergarments might help too, rather than boxers.
I do have to agree on my draft though, if he isn't well collected he can be a rough trot. Sorry bro.
Spent a whole hour today laying in a pasture, waiting for a sparkling vampire to show up. Alas, I woke up and looked over, only to find a mound of horse crap. Sigh.