How to trailer a horse in extreme heat?

I may have to trailer my horse in 95 degree weather (with a heat index of 110!). My trailer is a white two horse with vents and it is an hour and a half trailer ride. I'm planning on stopping halfway and unloading checking pulse, dehydration, offering water, hosing them down etc. Because of government... show more I may have to trailer my horse in 95 degree weather (with a heat index of 110!). My trailer is a white two horse with vents and it is an hour and a half trailer ride. I'm planning on stopping halfway and unloading checking pulse, dehydration, offering water, hosing them down etc. Because of government shutdowns all the rest stops are closed so its not going to be easy to stop any more than that. I also have a camera so I can watch them while I drive. Are there any other precautions I can take to avoid heat stoke?
8 answers 8