I have a thoroughbred that I have owned for about 2 years now. We have bonded and have figured each other out finally. Now we are working on the details and we need to work on his neck muscle. I use him for hunter and equitation competitions and am looking to start doing rated shows this season. So we need to get more muscle in his neck. His back and butt have improved greatly since I have worked with him but he is super lazy so he tries every way possible to not put his head down. He keeps the part of his neck at that attaches near the wither tight and his lower neck tense.
You can see the under muscling in these pictures and how his lower neck is pretty heavily muscled. He is starting to put his head down but he only every fully relaxes it for a couple seconds.
We do a lot of flat work and circles, bending, leg yields etc.
I thought I might try to get side reins and a surcingle to lunge him and encourage him to develop the correct muscles.