The best replacement for thumb release is wrist release.

The best alternatives to thumb release are rated as following:
★★★★★  wrist release
★★★  trigger release
★★  finger release
★★  back tension
★  tru fire thumb release
★  back tension release
★  wrist

Your alternative for thumb release is not listed? Suggest!
Speaking about thumb release, one probably shouldn't forget about back tension.

Other search terms related to thumb release and their ratings are:
★★★★★ back tension
You have in mind a companion for thumb release and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of thumb release in all years. Click on graph for more.
thumb release
wrist release
trigger release