I was recently reviewing your video on the Reversed Hackle Dry Fly. One of the advantages I noticed is that the tier doesn’t have to switch hands when creating the collar - this in turn means the hackle pliers (I use the same type you use) are less likely to slip off the feather.
So, I’m tying some up yesterday, it’s all good, except that my feather is twisting as I create the collar (like it always does). I notice in you vid that your hackle doesn’t twist. It seems that you are somehow rotating the pliers while winding the collar.
There are several ways to use the EZ Pliers - some more successful than others. I would suggest you read this paragraph, and then review the video. Note that 1. the EZ Pliers are kept parallel to the shank, not perpendicular, and 2. I roll the EZ Pliers stem between thumb and finger while wrapping the feather, so the same side faces the hook at all times (just like the same side of the moon faces the earth though its entire revolution).
Just to be clear, are you certain that the ‘twisting problem’ is associated with the pliers or how you manipulate the tool? Or, could it be that the hackle itself has a natural twist? I know for a fact that at least 2 genetic hackle breeders look at ‘natural hackle twisting’ with extreme prejudice and will destroy any necks that have feathers with this trait.
Purely due to the natural twist that occurs by wrapping - similar to how a thread twists - without switching hands and adjusting. Not a problem with the hackle.
I’ve got a pair of those, as well as some English style ones and one from C&F. I’ve come to the conclusion that there’s no such thing as a decent pair - except maybe a bull dog clamp that you can get if you’re some kind of medical professional a la Mike Valla.