Now that my allays will stay on their leads I moved them to the fence post I previously had them attached to.  I moved one as a test and once successful I tried to move the second.  With one lead already attached to the fence post I am unable to attach the second lead to the fence post.  I was able to detach the first lead, capture both allays, again, and attach both leads to the fence post in that manner, but that meant chasing down the allay, again, in a large area.