should i try rings/martingale?

no he is a gelding but he is 8 and wasnt gelded until he was 6 and he still gets rather excited when a mare is around who is in season.

Sonny - his teeth were only done 4 weeks ago when he got his back done. His is in his french link loose ring training snaffle. Its all got to do with his attitude/not wanting to listen to me lol

All pain issues he had have all been dealt with. His physical health is as good as he can get at the moment :)

Sounds like you've got a pretty good plan going - I'd also throw in LOTS of transitions and different pattern work like serpintines and different size circles - at least he'll have trouble predicting what he's going to do next, and he'll have to slow down to think :)