RE: Retriever training.
Mnfowlplay,
I ear pinch because I learned to do it that way. It's a habit. I FF a dog every 3-4 years so I can't justify some concrete monstrocity in my wife's back yard (that's right she owns the back yard). I use my PU's tailgate ora picnic table. I don't have the timing to toe hitch, if I get a refusal in the field the ear pinch is more convinent than the toe hitch. I learned to FF from an old bird dog field trialer. He ear pinched so I do now. My son helped FF a Jagdterrier he and I were training so he Ear Pinches now.
Dr Fatguy