Using the 26' retractable leash

After seeing myself on video practicing a sit stay with Lokum after he gets tangled up I realize I am rusty at dog training and need more practice my self in consistency and to not repeat commands to the dog.  I need to say it firmly and clearly "one" time and then if he breaks the stay put him back into the sit and keep him there until I release him from it. 



He usually holds his sit stays better than that when we are working on obedience, but here he was being allowed to roam freely and wasn't expecting to have to work for it.