I love a back like this. VERY strong coupling (tho someone will come on and claim a roach back but it isn't really.. just very strong). His croup is not so much flat as his tail set is high. He has knife withers.. in the last photo so saddle fit is going to be difficult.
This sort of back, while very strong, is not very supple in dressage work. It is a bit difficult for a horse built like this to curl his hind legs under him, but with practice can be done.
I like this horse. Good bone, good look and a very strong coupling.
Thank you very much for the replies! He did have an injury at his SI (not severe, but still affected him very badly and he was out of work for an year) -- I 'll take more pictures tomorrow and post them!
>Very similar to diddly's back. Straight, flat with a roach. All things diddly has. His back is very strong, but he has a tiny bit of trouble with working from the hind end. He can do it but its quite difficult for him.