The turnover

The turnover is probably as technical a move as possible in disc manipulation. It entails both spins, a myriad of angles and potentially the whole surface of the disc. To do a turnover requires the ability to delay both spins, to push the disc flat from an angled orientation and an understanding of the wind's (which can be self created) influence on the disc. A basic clock turnover (a "the" turnover if there is such a thing) to upside down counter would start with a clock delay in the left hand. One must precess the disc. The nail will go from the center of the disc towards the rim until the dome side is angled to a point where the disc can be pushed with such force so the dome side is pushed into the wind and turned over to a degree (and somewhat flattened). The finger would be inside by the rim close to the body with the bulk of the disc away from the body (hand on inside portion). This requires you to find the position which gets the dome to be in a position to be pushed into the wind. This push is essentially a skid as you push against the prevailing spin while pushing into the wind while elevating it somewhat. To complete the turnover the right hand needs to pick up the (now upside down) disc (somewhat, not completely as it is at an angle) and flatten it. This is where right hand needs to push into the dome upwards, making contact near the lowest point on the disc, on the other side from the body. This push up will force air into the "cup" of the disc, equalizing the pressure in it and flattening it. As this is happening, the finger should precess back towards the center of the upside down disc. It is kind of like digging out the disc.

The underlying key to a turnover will be the push. This is a muscle-memory/feel thing and is different for everyone. The stronger the push, the flatter the disc can become but the higher the risk of a "blowout". The push has a few components. The less the push the more the upside down take will be angled becomes more difficult as the incoming angle is increased towards near vertical. When pushing the disc over you will push forward towards the wind (or somewhat across the wind) as well as manipulating it in an upwards direction.

The ability to find the right body positioning cannot be understated. However done, it results in the dome of the disc pushing into the wind like an Apollo spacecraft re-entering the atmosphere and a "pull" which is also a push to flatten the incoming turned-over disc. All funky turnovers will have the same pressure point relationships. They will manifest themselves in many ways, but if you could just focus on the disc contact point, they will be remarkably similar.