I assume your referring to a fit show? Do you have enough time to completely break down and get the calf dry and re-fit? If not I would recommend spraying a little hocus pocus in their legs, belly, and tail. Let them lay down and rest, give them hay, and hold water until right before you go back in. To get ready just blow the calf out good and just a little bit of glue, combing, and fine tune clipping and you'll be ready to go again.