To align more with the name of the skill, and to increase its adoption (along with the tracking tree for ES
Now, I suppose this could be easily exploited and used outside the designated confines of tracking if it just increases speed when both statuses are active, but if its possible to only apply the bonus when you follow the trail that would solve any extracurricularity.
Alternatively, grant 1/2 ap movement for every time the ES steps on a tracking target icon - and let it stack with WoL.