After a comment about a training aid I built to maintain my spine angle I modified the device to use my ear to sense changes in my head position. This has proven to be much better. For some reason the ears are extremely sensitive to movement. After all they are responsible for balance so it make sense.
You can easily rig this device up if you suffer from spine angle issues.

Maintaining spine angle in the golf swing is crucial for consistency, power, and accuracy in the game. The spine angle refers to the tilt of the spine in relation to the ground throughout the swing motion. Here's why it's so important:

Consistency: Keeping a consistent spine angle ensures that the golfer repeats the same motion, resulting in consistent ball-striking. Any deviation in spine angle can lead to inconsistent shots, making it difficult to predict where the ball will go.
Power: A stable spine angle allows for efficient transfer of energy from the body to the clubhead. When the spine remains relatively straight, it enables the golfer to generate maximum rotational force, resulting in greater clubhead speed and longer shots. Any breakdown in spine angle can lead to power leaks, reducing the distance the ball travels.
Accuracy: Maintaining spine angle promotes better control over the clubface through impact. When the spine angle remains constant, the golfer is better able to square the clubface to the target line, resulting in more accurate shots. Changes in spine angle can cause the clubface to open or close, leading to off-target shots.
Prevention of Injuries: Proper spine angle helps in preventing injuries in the lower back region. Excessive arching or rounding of the spine during the swing can put strain on the muscles and discs of the lower back, leading to potential injuries over time. By maintaining a consistent spine angle, golfers can reduce the risk of back pain and injury.
Improved Balance and Stability: A stable spine angle contributes to better balance and stability throughout the swing. It serves as a foundation for the golfer to rotate around, maintaining control over their body movements. Any deviation in spine angle can result in loss of balance, leading to erratic shots.
Correct Swing Plane: A consistent spine angle helps in establishing the correct swing plane. The spine angle influences the plane of the swing, which is crucial for striking the ball cleanly and efficiently. Deviations in spine angle can cause the swing plane to become too steep or too shallow, resulting in inconsistent contact with the ball.
In conclusion, maintaining spine angle in the golf swing is fundamental to achieving consistency, power, accuracy, preventing injuries, and promoting overall performance on the golf course. Golfers should focus on developing and maintaining proper spine angle throughout the swing to improve their game and lower their scores.