Thanks. What I had been doing was walking her on a regular length leash (due to being in a residential area with traffic) then when we get to the field where it's safe I let her off leash for running recalls ....and now I can do a little fetch/tug with ball on a rope between recalls ! Unfortunately I think she has already outgrown the harness I had so I will need another.Great news on the fetch! I love fetch as a training tool.
The way I train, I just let puppies pull. I put them on a harness and use a long line. When they hit about 5-6 months, I introduce leash pressure using markers on a flat collar and then move to a prong to proof the loose leash training.
I think the long line would be great for in the field if I feel there are too many distractions. Sometimes others walk their dogs there...so I haven't been letting her off leash during those times.
I remember seeing the video of you walking off leash with Valor and his eyes were glued to your face ...how does one accomplish that ? Jamie stares at my hand or pocket. If I say "look at me " or point my non treat hand to my nose she will look at me....but it always has to be cued.