I too have a friend that trained their boxer to use the bell. They ended up having to take it down because he was constantly ringing it to go outside...too funny
Fargo is such a cutie. My cardi, Dudley, is 13 weeks old now, so we'll be going through the same things at pretty much the same time. We had some issues with pottying in his crate as well. Shrinking the size helped with the pooing, but he continued to pee in his crate. Now, he seems to have finally gotten the hang of it and doesn't have any problems with the crate at all. I've decided that everything is trial and error with these guys!
Welcome to the site! You'll learn loads of information here!
Jeni