I've fallen into a bit of a rut recently (plateau phase) and decided to take a drastic approach in order to improve. I'm not sure how I came up with the idea, but I started practicing my left-handed (non-dominant) strokes--everything except for the serve. Not on the court, mind you, that would be catastrophic, but just shadow swinging, which I do a lot of anyway. I came to a humbling discovery; my left-handed forehand is better in terms of mechanics than my normal, right-handed forehand. The most frustrating part is that it came so naturally, no thought, no concentration, just swung and it was comfortable. So I spent the last few years working like a madman on my right side, only to have my left side shoot past it in just a few days. The bright is, I've been using this to my advantage. I'm literally using my left-side to teach my right-side now and am getting very interesting results indeed. I haven't actually tried it on court yet, but it feels good and I'm definitely making significant changes to my stroke(s). Anyway, I will keep this up to date because I think I may have stumbled onto something special here. I've been practicing forehand, one AND two-handed backhands on my non-dominant side. Maybe someone else will benefit from this or has tried this out before and has something to add. P.S. I should also point out, I write left-handed, but play right-handed, the opposite of Nadal. I can also write right-handed and strangely enough my right-handed writing is neater than my left, albeit much MUCH slower.