I did a lot of "marching work" at walk...having the horse engaged, of course, after a long rein warm up. did a lot of bending and flexion at walk, and if I really needed to do some trot sets or canters, did them up hill. And used a standing bandage with cool green jelly afterwards, sometimes mixed with a bit of uptite, and put water down the bandages for more heat pulling.
Don't know it it made a big difference, but it made me feel better.
What would you try if you knew you would not fail?
out here in SoCal, that's ALL it is all summer long is hot hot hot and extra hard. We do have rubber footing with sand for a jumping and dressage rings and we wet them down in the evenings when we ride. As for cross country, it's usually just a trot or walk and save the canter/trot sets for the rings.
Just curious, what do you do differently than in normal weather and easier ground.
Probably not the answer you're looking for, but since I don't have an all weather surface I trailer out to one most days when the ground is rock hard. I'm lucky in that I have about three I can use all less than a 5 minute trailer ride away.
The only thing I really do is I don't jump (or not very much and definitely not very high), avoid galloping, and do a lot more hacking than anything. We're in an awkward situation right now....lots of room to ride but the one place it would be nice to have (the indoor with fancy footing) isn't done.
My horse does go in pads this time of year, and, since he lost both pads at his last event, any time I do anything more than flatwork, he gets his feet packed overnight. Lots of Sore No More on his legs, too. Ice or cold hose if he does jump or gallop (when the footing is better...but I do that anyway).