I just leave it on for a while. It depends on the dog. I had one that figured it out the first time it touch it and others that take a week or two. Then if they have a memory lapse and start doing it again, put it back on for a while longer.

I use the wider stuff. It looks like masking tape.

I've used double sided tape for some of my foster danes. Put it around the edge of the counter. They don't like getting stuck to it.

I don't know any personally, but this could give you some more info.
http://clubs.akc.org/stca/

It variety depending on your dogs normal temperature. It usually drops at least a degree with in 24 hours of birth.

You shouldn't "stud out" your dog until it's old enough, has a good temperament, has pass all health testing suggested for it's breed genetic problems, and has been proven to meet the breed standard. Then it should be done with a female pit bull no...

You are very welcome! I always good to see people wanting to learn before they get a puppy.

I would recruit the help of a positive trainer or behaviorist. Until then definitely keep her restrained while you have visitors. Personally I would never jerk her or use an ecollar to try to fix this. You need to make the visitors a positive thing...

He's a looker. Good luck with him in the ring! I wish everyone would find a breeder like that.

Volunteering is awesome! I also volunteer. Days like that are like therapy, but there will be bad days too. No matter what it's so rewarding knowing your helping the animals.