I cant bring myself to use an e-collar on my dog?

E-collars are abusive, as well as prong collars. If your dog can get out of a Gentle Leader, it mustn't be fitted correctly. They need to be tight in back. Have you tried a harness, specially made for hard to handle dogs. They work very good on large dogs, especially, when the person has no control over the dog due to it's weight.