I have to agree with MikeC. and not just because that sentence rhymes. I started out with an X-step throwing RHBH and became very comfortable doing so, not accurate or consistent by any means, but comfortable. Well, fast forward to now and I've had to start over from scratch throwing LHBH, and decided to do so from a standstill. Doing so has improved my form ten-fold. It became glaringly apparent after a few throws that I was simply trying too hard on my X-step throws, sacrificing form for what I equated to "power"(a misnomer indeed). Throwing from a standstill has shown me that power comes not from force, effort or foot speed, but from controlled timing and weight shift. Sure it was a bit uncomfortable at first, but so was a backhand in general. If you(anyone) wants to improve(at anything) learn all you can as best you can. If nothing else, throwing from a standstill has vastly improved my approaches from difficult lies, drives from the ever prevalent hazardous tees, and my understanding of the proper physics/mechanics of a good throw. It's not like you won't still be able to X-step when conditions allow, in fact your X-step will most certainly improve with the mastering of a standstill drive. Why, you might ask? Well, simply because it slows down the process and makes one acutely aware of what's required to throw correctly. If for no other reason learn to stand and deliver because it's another option to have in your arsenal....and it's nice to have options.