ash.
I use a thumb trigger for everything I just activate it by using back tension.
When hunting I just clip the release onto the loop sit back and wait
Here is a pic of the release I am using except mine is the 4 finger version..
The good thing about this release is there is no springs and you can adjust the trigger pull from 3lb to 41/2lb to 6lb the added plus is it has zero trigger travel.
Here is a pic of the internals of the release.