To these dogs, everything they love in the world just signals frustration which makes them go ballistic
The problem with this, is that frustrated dogs aren't typically reliable off-leash - meaning if we just take their leash off they're going to run away and get into trouble. But with the appropriate skill, off-leash reliability can come about much quicker than you think.
Watch Eva on just her second day of off-leash training. What I want to start building in a dog is a general awareness of where I am, a responsiveness to my voice and commands (i.e. leave it part way through the video), and of course a good recall: