I feel your pain as a natural righty who throws LHBH (fairly well) and RHFH (not so well). I've been working a little on RHBH (mainly putting right now), but I think the advice to work on understable discs is a good one. When I played more, I was pretty good with my understable discs. I currently carry a Stingray, three different Leopards, a Beast, and now a Mamba. No, you won't get a nice straight flight that fades right (left for me) just at the end, but you should be able to get to a point where you can minimize the disadvantage on most "righty" holes. For shorter shots, a disc like a Stingray can give you a pretty nice consistent hook. For longer shots, a key is to get the snap and the height just right so that your disc is on the ground before the natural slow speed fade takes over.