Teach him the stop whistle and proof it such that it is 100% failsafe for all emergency situations.I agree the whistle recall or other commands should be taught to all dogs,
after the verbal command has been taught.
What I do not agree with is that in an emergency situation it is safer to go for the whistle
first eg, if the dog suddenly takes off after something the '
speed of accelaration from quiescent' is enormous - the squirrel example vid above is one example - how on earth would anyone get a whistle from hanging around the neck to mouth then to blow in the space of time she went for that squirrel (I dont stop her killing squirrels, they do terminal damage to trees + red squirrels cant survive when they are around).
This second vid clip below was a real life emergency if i had not been able get her to hit her brakes so fast she would have been into those deer before i managed to get the whistle to my mouth, on top of which the deer herd themselves would have been straight onto that road, the voice is always the quickest audio command to access, this vid
clearly illustrates the time between the verbal "ous" (leave it) command & getting the whistle to my mouth in totally unexpected situation.
Real life emergency event
https://www.youtube.com/watch?v=IBWrgS51-kc.