I don't want to present myself as an 8m expert (my bread and butter has always been in the field), but I've been working hard on it for a while now and I'm happy to share what I've picked up.
Typically, when I 'pull' a throw (being right handed missing to the left) it's because my shoulders weren't square to my target. Keeping my front foot pointed at the target, back straight, and shoulders square allows for a smooth back swing and a toss that is generally on line.
I haven't found any tricks to getting the range right - it's just a matter of practice and getting the right feel. If your range is perfect then the rotation doesn't matter, but on the other hand the right rotation can forgive errors in distance, you know what I mean? Timing your rotation is all in the grip; holding toward the end spins it faster and holding toward the middle spins it slower. Wood varies in density so you have to adapt your toss to the weight of the baton in your hand - that's the real challenge, and the only answer is practice, practice, practice...
Oh, and don't get me started on windage. At this point I'm still in the guess-and-hope phase when it comes to adjusting for a cross wind.