With boat pose, and in this variation, there can be a tendency to hunch. Focus on keeping your spine straight. When you twist, imagine as if you’re twisting up instead of down.
If you want to work this move even more, consider adding in low boat between sides: When you come back to center, bring your arms to the sides of your shins (boat pose) and on an exhale, slowly lower your torso and legs down to a hover, with only your bottom touching the floor. Inhale and squeeze up back to center.