Dogs feel it’s their job to patrol the perimeters of the yard. Rather than fight this instinct, include a running space at or near the edge of your yard and add a clearly designed route to get to it. Make the route straight or softly curving; your dog will probably cut the corner rather than make a 90-degree turn.
I am noticing a trend in deck design...wide expanses of steps ( I like ) and NO railings. I'm not sure about the no railing. Also, the stepping stones look like broken up concrete from the "before" phase.