Know this is old but did you ever discover what this noise was? My LR3 is making the same noise.

A very useful drill. My approach to "cold blinds", that is an unknown and new destination is ladder drills during pups first winter. kzbin.info/www/bejne/bny2Z4hrg7dpra8 The idea is to plant bumpers down a linear corridor with pup in the truck so he does not see bumper planted. The art is the spacing, I want them such that pup does not loose confidence. So Day 1 might be at 25,50,75,100 yards. The next day at a completely new location might be at 50, 100, 150, 200 yards. The drill is designed to get them lining with confidence and lining past "old falls" since they go directly over the previous bumper.

need to get out and put up some more footage, good job

Excellent video 👍🏻 very helpful. How do you get such a sharp stop on the whistle?

Great video mate

sometimes, if a dog is lacking the confidence to go past that spot, it pays to move yourself and dog further back each time, leaving the dummies in the same area

Nice demonstration of a young dog working well. Look forward to the next stage video.