Having come from a Hunt Test background and preparing to start running derbies next year I have been to several tests to observe and learn.
One thing I noticed is every test I have been to all the birds are hand thrown and no wingers are used.
The other thing I noticed is a lot of the gallery talk during the setup/test dog revolves around, they need a better throw there, that needs to be higher etc. and during the series the throws seem to be somewhat inconsistent as expected with human error.
So are wingers typically not used in Field Trials and why? Or did I just witness an anomaly of tests not using them. I worked at a couple FTs in the midwest and I thought they used wingers with gunners but couldn't swear to it.
As an outsider is just seems a mechanical device would yield a more consistent throw for a competitive environment.