ok guys, when you throw a disc without it spinning what happens....it just falls to the ground right?
Discs need spin/snap to keep them from going left, and power to keep them going forward otherwise they dip on the left like when there is no spin or when you throw it with low/no spin and it fades. The disc maintaining its flight depends on forward momentum and glide, power, etc. The wing of the disc will act like the wing of a plane keeping it in the air longer. The rotation of the disc keeps the weight centered so the disc can keep forward momentum and that "wing effect" going. That is the basis for all throws with a disc.
You can manipulate this effect by adding or subtracting variables of the throw. Discs, power, form, snap, arm speed, angle of release. Even weather phenomena change flight characteristics a little. Humidity or lack of it, altitude, wind, temperature. All of those things are variables in how your disc will react when thrown.
A disc when thrown at its power requirement will fly straight if flat. This changes when variables come in. A flat throw with more than the appropriate amount of power will cause the disc to turn to the right a little in the air (rhbh). That effect is magnified when you change the angle of the wing of the disc and add the same power. Be it a hyzer release or anny release.
You can throw the disc off axis to achieve a certain effect without overpowering it or forcing it. This is not OAT. A hyzer or anhyzer shot is not necessarily a shot that requires OAT, and the discs not being horizontal doesnt automatically qualify it for OAT. You are simply changing the flight path by increasing or decreasing angle of release. You can also throw it too hard from a release and "make" a disc do something. That is what i define as OAT. Sometimes the results arent so good, others have found a way to make it more predictable.
IMO, OAT is most prevalent in beginners and people who have never thrown anything but a disc that was wayyyy too big for them. Generally these peoples bags will look like this 10+ warp speed drivers, Putter, Mid (maybe). They tend to throw EVERYTHING with an "S" shot because that is the only way they have ever known to get something to go straight. They generally also putt with a bit of anhyzer. Most dont use mids, but if they have them, they probably are still in the process of figuring out what theyre for.