I won,t take a youngster on a lamping foray until it can navigate obstacles encountered,gates,walls,fences etc.Thats not to say that lamping education should not start far earlier,i go into the back field and get pups used to the lamp and retrieve,throwing objects illuminated by the lamp and letting the pup chase and retrieve,then throwing the dummy and then illuminating it and slowly getting the youngster to follow and learn.Its rare that ill have a youngster chasing bunnys in the lamp until its reached 10 months of age.