Time and patience. Iv posted a few months ago on another thread along the same lines. Time and patience! Yes you will feel like giving up at times, i did. At the end of the day you have to remember that the average track dog has done 3+ years of ONLY going flat out with a slight curve to the left on dead flat ground. THAT is all they know. They are not ready for a target to stop, do a u turn, turn right, ditches, fences, branches etc laying on the ground, trees and they WILL come unstuck repeatedly on each one (and every other) of these obstacles. BUT they will learn eventually if you are a go