I would do this, in the morning before the sun is up, rinse the first one, comb the hair up in the direction you are blowing it in, put that calf in the cooler with a fan blowing on him. Rinse the second calf, comb his hair up the way you would blow it and tie him in front of the fan. If you feed in the box, feed them and wait 30 minutes. Now go back and blow the first calf out, then move on to the second one. do this again around 6 in the evening and then just before you kick them out blow the hair again and put some Kleen sheen on them, kick them out after the temp gets down to 70 if you can. You want to concentrate on the legs with a roto brush each time you rinse and blow out, you can also spay revive on the legs as you roto brush on them.
If you put them in the box and leave them wet the hair is never going to do what you want. You need to work the hair and have them dry by the time you are finished. Working the hair and brushing helps grow hair, blowing them out helps keep it trained. Or as it is called gets the hair to pop.