Why is your stall wet? Is it because of a low spot that collects run off? You may be able to put weeping tile at the lowest edge of the stall close so the wall to that it is less likely that it would get stepped on; you may also have to slope the stall floor to encourage the water to move to the edge. Alternatively, you may be able to bring in more dirt and raise the floor sufficiently to prevent the water from collecting to begin with. Either way, water has to be able to drain away from the site so you may also have to do some work to the outside of the barn as well. Good luck with it.