Thank you very much! I'm taking all of this into account - while it's not hunting season now, still 'bearing' in mind your other comments.

We've worked out a schedule for hiking in a morning & evening stint, breaking through the heat of the day. It works for me medically as well, since I'm prone to fainting in high-heat... Beyond that I'm thrilled to see he is standing up to his breed expectations and does well hauling for longer distances as long as he's kept cool.