Breedia Dog Forum
We have a similar issue at times, I have found bully sticks or beef cheeks seems to help. I give her one when shes amped up and it seems to settle...
We have a gsp just a bit older than yours, I will tell you that it takes a lot of practice. We started with clicker training in the house to recall...
I can tell you we have had the same problem and the hot sauce advise did not work for us. The only thing we have found to work is laundry baskets...
First I would say you should check out youtube to help out on the training of your gsp their are many great trainers on there that will help answer...