Stupidest use of a flexi I have ever seen:
A man walking his yellow Lab with a Halti on a flexi (for real!).
Halti did not do anything to give the man any control on the dog - the dog just braced him/herself against the head - collar and and ran across a multi-lane highway dragging his 16 feet behind him hanging on to the handle of the extended leash -
I'm still trying to figure out how a flexi on a halti on a dog that just braces itself and pulls is supposed to provide control?
As a disclaimer, I love my flexis!! BUT - I only use them for open areas, fields, and walks on my rural no-traffic roads, and my dogs are trained to come to my side in heel position when commanded, or, in winter, to jump up on the snowbanks and lie or sit down as when told - so instant response and control.
Any walk in any area where there is normal people or car traffic is on a regular lead.