Pull vertical. Plane comes back to the canopy. Add downthrust.

Pull vertical. Plane goes towards landing gear. Add upthrust.

Pull vertical. Plane goes left so bad you need a lot of rudder to correct it. Add right thrust.

Pull vertical. Plane goes straight up. You don't have enough power for 3D.

In all actuality--you really don't want a plane to go straight up at full throttle. If it does that, it's going to pull right when your flying level. What you really want is a compromise between right thrust and having to use a bit of right rudder on a full power upline.