How to get a strong stop in the blind point and keep the dog mentally open

Getting a strong stop in the blind point in FCI obedience class 3 is difficult. At the same time you need to keep the dog mentally open and listening. The send away with directions is a complex exercise in FCI obedience class 3, but I love using this method. It has worked wonders for Bonus, especially when it comes to avoiding the dog making a curved line to the blind point.