Day 4 of lunging Spice our training sessions and I have shortened the side reins another 5cm today so there is a little more contact to continue to assist in keeping him "straight" on the line he is travelling on which helps give me some more control over how he is travelling.
He started off quite inattentive and was rushing around on the lunge and being over-reactive to my aids when I asked him to go forward and when I tried to steady him he would stop and come back into the centre of the circle rather than slowing down and listening to me.
Because of this I kept our training session fairly simple and just kept asking him to go out on the lunge with our main goal of getting him to calm down and relax so he was trotting & cantering "straight" in an even rhythm & tempo & listening to my aids.