Please could someone give me some ideas as to how to stop my girls pulling on the lead. I have tried head halti, body harness and standing still when I get pulled. My girls are now five and a half months and weight about 28Kg (65-70lbs) each. when they decide they want to talk to another dog or person, they take me with them. Im a big lass, and I cant hold them back, leaders nip my hands. We are doing puppy class, but that is all walking one on one, I walk both together as I also have 3 kids under 10 at home. Please save my already damaged back from any more pain.