Two words “gaited horse”
My right ankle is my weakest link due to a bad sprain years ago playing tennis. I taped my ankle before really long rides but normally a tight paddock boot with half chaps keeps my ankle happy.
I would let your leathers down at least 1 hole so you can drape more around the horse so you are not keeping so much weight in your ankles. I also find fleece tush cushions ie fleece seat savers a truly miracle piece of equipment.
There are zero rides near me so I have to wait until we move back to FL so I can get back to competitive trails.
Glad you enjoyed your ride, and hope you do ride again!