Yes, it looks better now.
Good maneuverability makes sense to me.
I was thinking perfect because non winged flyer tent to have awesome maneuverability and smaller creatures have better maneuverability so it seemed right.
Im ok with good i just thought perfect worked because the no wings and and size issues.
I can see that a heat haze would distort location, making it hardter to hit the foxdragon, but I'd suspect that the blurry air around the critter would actually make it harder to hide rather than easier.