Having watched the vid
Just remember these dogs take a bit longer to mature so it may take atleast a year longer to achieve the end goal
Lead work is easy if you take it slowly
Not certain I agree with you that BMH/HS "take longer to mature". Both Society imposes tests at 12 months which, if passed, make a dog ready for all work bar the chase.
I have seen some young labradors at field trials but I cannot recollect ever having seen a 12 month old one competing in an open trial.
