I'm surprised skabob didn't pull out the ole' "Throw a Comet" idea.
Frankly, if you have one, it's a great disc for this. You can throw it pretty close to max power - 80-90%, pretty close to flat (maybe a 1/4" of hyzer) and it just goes straight and fades. If you put any anhyzer on it or have any OAT, then it goes to the right without fail. Even if you put hyzer on it and have OAT, it'll flip up and over. It's a zero on the stability, so it does exactly what you ask it to.
If not that, then I'd suggest this:
Get a handful of putters that you can drive with (more only means less walking).
Throw from a standstill position.
Throw big anhyzers in such a way as they glide down from left to right and land flat (not crash on an edge or fade back). When you can do this consistently, then you'll be throwing well.
Once you can do that, move to throwing them flat and then hyzer.
All you need to do to remove OAT is to finish in a mirror form of where you start. If you're level, finish level. Don't throw as hard if that's what it takes.
If you're talking about wobble, that is sometimes grip related as well, so it may not be OAT - best I can suggest is getting a video of yourself and look at it or post it for folks to comment.
EDIT: When it comes to grip, remember, the disc should be pivoting (coming off) your index finger and thumb grip. The rest is all for security and guidance. IF the disc is coming off those other fingers, then that might cause some wobble. Try pinching the disc tightly between index and thumb and just resting the others on the disc and throw a few light shots and see what happens.
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