Regarding Entrapment and Trap Mastery

Hi guys,

I've been playing hunters for 12 years but there's still stuff bothering me about hidden statistics in some mechanics.

So... I am not sure whether I should use Improved Wing Clip, or Entrapment.

It would seem more logical to use Entrapment because that way I get to immobilize more than one melee on my *** with Frost Trap without using Global CoolDowns, tho it's not like I can shoot from melee range anyway so I can spam Wing Clip on one guy who is snare spamming anyway.

BUT - I happened to score a Wing Clip's immobilize effect many times more often than Entrap on my Forst* Trap. This is where I start to wonder... am I just having bad luck with me 3/3 Entrapment, or is Trap Mastery actually affecting each tick of Frost Trap snare every few seconds/second? I've seen many skip it because they don't know what's going on.

To sum it up -- is Trap Mastery useless when used with Frost Trap + Entrapment?