it would seem the key would be feeling comfortable hitting the wake switch ts, which is a difficult thing to do (tho kristian im sure you're much better at evaluating this than i). if you can't properly leave the wake switch ts then you're going to be hucking the trick at best.
because i like to ride switch a lot and can clear the wake switch ts, i've had people suggest i try some switch ts tricks (like a crow). partially i found this ridiculous as i have never even attempted a regular crow! but also because i know im not comfortable enough yet with my technique with simply a ts jump switch.
all this to say, most likely the problem is in the approach, not the air technique. tho i like your suggestion kristian. i often see crows that look more like front flips because the 180 is done so early on.