Letting you channel it while moving would be a little much, but it would be nice if the snare lasted a little longer than the duration. If each tick put a two or three second snare on them, that way the snare would actually do something other than rooting you in place and making them take very slightly longer to get to you.
Ah yes, I'll just Dot him up and run away and....what's this? He's running after me? MY PLAN IS FOILED.