Need advice...not getting anywhere with barking at other dogs
My Isa is 11 months old. Background: She has been in weekly obedience classes since 4 months. We also work with a private trainer about twice a month. She used to go to the dog park until I got fed up with people bringing dogs who should never be in a park. She lives with 2 other dogs. We have play dates with a neighbor's 3 dogs several times a week. She also goes everywhere with me if dogs are allowed....some restaurants, hardware store, assisted living facility, state parks, vacations, etc.
I feel like I have done everything I can to socialize her. And she if great with car travel, people, babies, toddlers, wheelchairs, bicycles, etc.
However, if she sees a cat or dog (that she has not met before) she lunges and barks her head off. I don't think it is aggression, think just excitement. But it scares other people. Treats and toys will not get her attention. (Food is never a motivator for her....she rarely eats an entire meal) Nothing will distract her. The trainers have me do a leash correction (no response at all), give another command (she will sit or down but still bark).
Out of frustration I tried a training collar. It seemed to work but you have to have collar on of course and fiddle with a remote. Should I continue with this? Use a bark collar?
I'm at a loss. She took the good citizen's test (knowing she would not pass the part about walking by a strange dog...and she didn't). But all the other sections she was great!
This is the only issue we have with her.