For the G-Force s-e-x position, she lies down on herr back and pulls her knees close to her chest. He kneels up in front of her, grabbing hold of her feet. Thrusting his hips forward he can penetrate her while controling the movement and supporting her balance. Looking to add even more “God-that’s-good” action?
She can put her feet on his chest and have him hold on to her hips – it’ll give him extra control and let him plunge even deeper.