Hi! i just wanted to know what is your opinion about this trainer? http://www.mrazovack9.com/ They offer PP dogs for sale (at lower prices than usual) but also offer to teach people how to become dog trainers themselves (for PP work). But I don't know - are they good or not? You learn with their dogs - different breeds and all which I think is good, right? Cause my problem is that I curently only have one dog and he has joint issues so isn't suitable for any sport that is requires a lot of jumping and running... I am asking because I would like to learn how to become a PP dog trainer and this school is in serbia that is pretty close to where I live now. But is it any good? If not is there any other "school" you would recomend for that kind of training? Thanks!