For perfect taming you want pace your shots for 2 reasons, 1 it allows for torpor to build up before applying the next stack of torpor and it will also decrease the likelihood of shooting a tame after knockout increasing your chances at a perfect tame.
The fun way is to jump off and grapple to your argie and whistle it to attack and since argies are slow it won’t catch up in time so tranq till it goes out also bring parachutes and consider liking so more people will know
If you manage to knock a quetzal out, try starve taming. If you never tried starve taming it’s just leaving a Dino’s hunger go to half way or lower and then you start feeding. I’ve done this many times and it’s very useful taming trick.