I am gonna go against the grain here and say get a thumb trigger style release as you can use that as a back tension release and as well as a hunting release.

But unlike a full BT release you can command the shot if you want.

I use a thumb trigger for both 3d and hunting I just curl my thumb around the trigger and squeeze my shoulder blades together which puts pressure on the trigger to fire it.

IMHO they are better than a wrist style because it gives you a more natural draw.
Just make sure when you draw the bow your thumb is pointed down