On the same note, dogs remember where "home base" is. Repeating a mark or blind can sometimes be counterproductive for a pup but running it the opposite way from the fall to "home base" really makes sense to dogs and reinforces the "line" and your not sending them back to an old fall. Just my .02, its worth what you paidWayne
re the recall over the log.
Think of some of the retrieves you will be asking your dog to do in the upcoming months. Now, recalls with your dog through the same stuff he will see later on when doing marks.
Recall through cover, ditches, on a sidehill, water, over islands, etc. Pup will usually come straight to you.
Anyway, something to keep in mind that isn't talked about much.