Contact parties that have first hand experience using them around the farmstead and have done so with multiple dogs over many years.
That's just what the OP has done here.
But, if you mean off-line 'parties', then yes, that would be better than trying to get an education from people who only have claims to go off, but no proof to support those claims.
I gather from the vague inferences in some of your posts (one now edited) that perhaps this is something that concerns you?
Unfortunately, it's just the nature of the internet and discussion medium, after all this is not one of those websites where people have to prove they work for a verifiable institute or similar before being granted acceptance.
Nobody using the internet constantly cites exhaustive and verifiable sources to somehow prove their opinions and statements, really only a few people attempt to do so (lol!) but it does absolutely nothing for their credibility except within their own mind; nevertheless arbitrarily believing that anyone without proof of claims is a liar merely shows the disbeliever is possibly paranoid or delusional.
While you and I, and many others, have very differing experiences and beliefs, I don't discredit yours nor assume anyone here is a liar just because their beliefs/experiences directly contradict my own. I believe everyone here has information of value to offer, even the very newbie 'parties', and it's unfortunate that some take offense at anyone sharing an experience that seems to contradict their own. Not accusing you of that, mind, just making a general note on how most multi-thread disagreements start: with non-acceptance of, or attacking of, differing experiences. The world isn't black and white, there are many answers to a given question.
Online 'parties' necessarily operate on benefit of the doubt, even when (for a random example), someone claims they're employed as a chicken-trainer/behavioralist with only one success case in their entire multi-decade career wherein they finally managed to get a now-ancient chicken to change its behavior virtually on its deathbed. In which case, was it senility and decrepitude that changed the behavior, or training?
...I'm joking and exaggerating, as should be very obvious, but I will state it plainly just to be sure people know.
To be honest I don't disbelieve anyone on BYC; I have no sound reason to. The above example is a pretty good one to illustrate how a negative perception bias against a 'party' can seem to support an actually baseless suspicion that said 'party' is talking BS. It remains all just in one's head and has no bearing on reality.
Being free of such unsupported biases does much for the community not to mention one's own mental health.
(All these parties! Such fun).
Best wishes. And I do mean that, it's not some arbitrary by-line.