I am wondering about people in the Southeast who ride in the high humidity? I always assumed that horses competing in this climate needed e-lytes at rides? When I worked as a weekend feeder at a local h/j barn, they kept the horses on powedered e-lytes in their feed through the summer. I am inexperienced and have always given my horse electrolytes in their feed the week before the ride and will give them paste electrolytes at the ride if they are drinking well. I am only doing LDs so maybe this is overkill.
I may try doing without at my next ride just to see how it goes. I am expecting temps in the mid eighties and humidity at a minimum of 70%.