You're a student of Roy Harris? I'm jealous! I've got his video on leg locks and it is great. Roy Harris seems to be a very gifted instructor from the videos I have seen of him and the articles I have read that were written by him.
I have to ask, have you had discusssions with him in regards to aikido? His opinons on it's training methods? Techniques? I think it would be great to talk to him about it.