RE: 2 early for doe urine, bleating, grunting (OH)?
Doe urine acts as basically a cover scent. It is designed to make the deer feel comfortable. I have found that grunting and light rattling will bring bucks in this time of year, but has scarred a few does away from me.
Estrous is a different "animal". I have seen many a doe act spooked by it, does do not like to be around other does in heat, because they attract male bucks. If a doe is not in heat, she doesn't want to be harassed. If you want to hunt does, don't put estrous out. In the same idea, I swear by estrous to bring bucks in before, during, after, and for the second rut.