I am giving this a friendly bump because I'd like to know more about Succeed as well. I want to start getting into endurance when my horses are old enough. I have one coming 4yo (April 2013) and one coming 3yo (July 2013) and would love to know prior to doing even an intro ride what works well.
I took the Succeed challenge. So far the results are great! My mare is feeling much better. I thought she was fat, but as it turns out she was just bloated and retaing too much water. She is also able to step up under her belly now and is bearing more weight on her HQ. Her energy level is back. I am only on week two, so I look forward to seeing how much she changes over the next six weeks!