listen to the guy that you are paying to teach you how to back up . That is what he is there for and he will be able to see you problems better than we can . But the to remember is that you will get better the more you do it . It will get to the point where it becomes second nature to you . I am the kind of person that can not tell you how to do it because I don't know how I do it I see the spot and I just know how to put the trailer in the spot . That is what 32 years of driving will do for you . I know it seems like it is hard but you will get the hang of it . It does help though if you are one the lucky ones that it just comes natural to.
Forgit all this advise. Listen, pay attention and do what your told when you told and you may learn something.
Yep, bottom of the wheel. left makes the back of the trailer go left, and vise versa. (sp) That and get all the seat time you can! Mikeeee