Thank you very much for your Answer.

I tried ro film it, bit my pivo lost track all the time. 

And its already way better. I think she understood the concept. Will try it tomorrow again and will see, if shes remembering.

I wish i could See it only one time. But its pretty impossible for me.

Thank you for your Response! 40ft is 12m. Thats what i had in mind. I dont need to lope that much, as the trot is the "scooling" gate in my opinion. What they cant do at trot they wont be able to do it at Canter.

Im really looking forward to train him with your method. I will Stephan back now and start from the beginning to fix some holes. like leading, i made it different the last years but your Explanation makes sense for the further work, because he always turns in and walks up to me and in my space. Its pretty difficult to work on stopping like that f.e.