Thanks for all the input. Been emailing Bikes at Work and the arm can be used both vertical or horizontal I just need to buy the extra attachment. So that's what I'm going to do. The Dummy is electric a front e-motor. Figure that way I can use the trailer with another bike if I want to.
After hearing all the complaints about the kickback I bit the bullet last Spring and got a Rolling Jackass. Worth every penny.
Will be making my purchase next week.