RE: Best thumb trigger release for hunting
I've been shooting a thumb activated model for many years now and will give this advice. There are NO good ones that are inexpensive. You get what you pay for. Good ones such as Cascade or Carter are in the $100 or more range. At present I have four Cascades
Some other options would be to look around at some and see what you might like. Then look in the classifieds on ArcheryTalk.com.