Using your Ninja Line Training Course with obstacles. The course is.a conditioning course: You will only improve over Hume. Donor expect to be able to complete it the first couple of times you try the course. 1. Use the roe ladder for the users to reach the first obstacle on the line in order te begin their course: 2. For the first couple of times jou may want to set the line height, so the users can be on their "tipsy toes” taking some of their weight off their grips an the obstacles.