After a hard ride or jump school, I use ice boots. I have a set of 4, one for each leg (MacKinnon) and also hock boots (Reitsport). I put them on while I untack, groom, putz around etc. Sometimes I will leave them on the horse in his stall while I ride the next horse. Cheap, easy!
I dont do anything. I only jump 3'0-3'6 at the most. I will sometimes wrap if he is going to be stabled over night, but he generally doesnt stock up and I usually have him turned out in the evenings after lessons.
I ice my TB after a jump school, even though we are not jumping anything over 2'6" yet. he has scar tissue on his right hind so I ice his hind legs. if I have the 20 min to watch him (usually when I clean tack) I will put him on the game ready, but if not he gets hosed off and out on the patience tree to dry with professionals choice ice cells in a set of SMBs.
I used to cold hose after every strenuous workout, but now I use the IceVibe boots on my driving horse after every drive. I figure I have them, why not get full use out of them. And they're so easy to use, and nice to let them do their job for 20 min while I take care of rest of the horse.
If you've ever run or worked out hard and been sore, I think you would agree that a little ice can help even a "non injured" tendon after a strenuous workout. Helps reduce inflammation. My horse is older and has some arthritis and he will at times get a little stiff in the hocks and have slight swelling. The ice boots reduce that quickly and easily. I also use Sore No More linament and sometimes I will wrap/poultice.