Heat, fog and early season foliage are the reasons I don't get serious about bowhunting till after the first good frost or end of MZ season.But I am lucky I have my own private land to hunt ( I belong to a good lease with just 6 guys on 900 acres). Unfortunately we spend the first few weeks each year chasing tresspassers who seem to think we pay the lease all year so they have a place to hunt.BT