Hello. I have two Weim's as well and our female is a rescue. Neither are crate trained but both like to bark, especially at the mailman, UPS driver etc. We use a bark collar and as George stated above it only gives them a little jolt. They still bark if they feel it's worth it as the collar won't continue to buzz them. They are great dogs and mine are calm as well. That is mostly due to the fact that my wife runs with them daily, usually 5-8 miles per run.
Chris