How to put a rock solid handle on a dog?

With me it all starts with pups. I cannot stand a shy dog and I raise my own and I am handling them from 2 or 3 weeks on. As far as baydogs go I start them on a 75 yard ski rope and teach them to come when I call or come to the tone. I have already taught them how to lead and basicly after that start teaching them to load up.
On my bulldogs I start early and by 4 or 5 months old they know to heel, sit, stay and come. also down. Once they are 6 months or so I start teaching them to jump up on their house or objects they are able to jump up on and build from there. I have a 9 month old chocolate bulldog that can already jump up on top of the dogbox on the side x side and I feed him up there. He will also heel without a leash.