[badbullgator]

A few things come to mind, but I am not sure they are the real answers.
1) advantage to dog and handler - may or may not be true. Adds flotation to a dog thus making perserverence different for dogs with and without vest. You may gain an advantage of being better able to see your dog with a vest. Takes some of the cold out of the picture and again changes the test for a dog with vs one w/o.
2) Safety - vest can and do get hung on things. Of course the other argument could be that in cold weather it is safer, but then again most HT do not take place in cold weather.
3) Makes a different test for dogs wearing one vs those who do not and you judge against one standard.
I am not saying it is right or wrong, just some reasons I can think of that they are not allowed. Of course down here don't use them anyway

 

[badbullgator]

RTF is about far more than training. Who appointed you the offcial content police?
You want training information? Do a search EVERYTHING you could ever want to know about has been covered over the past ten years.
There is this neat little thing on your computer mouse. If you want to read something you click on it. If you don't want to read something DO NOT OPEN THE THREAD. Pretty simple. Why did you open this if all you wanted to do is bitch?
The title of this thread is pretty clear as was the grandson scoring TD's. Why in the world did you open them if you don't want to read it? Did someone trick you into opening something like this? Can you just not figure out that the title says what the content is most of the time?

 

[badbullgator]

Dude, you have issues.

I have issues? I am not the one opening threads they DO NOT WANT to read and then bitching about the content of said threads.