CT1 sensors

My S70 keeps missing shots. I am sure I wear the watch in the right way and all settings are ok. I think it is due to the my swing speed / impact as I am a beginning golfer. 

I am considering buying the CT1 sensors to improve shot registration. My question is: how are shots registered when using the CT1s ?

Is a tap sufficient to actually measure a shot, meaning that after a tap a shot is always detected even when the watch doesn’t register a swing and impact ? If so then that would solve my issue and it would also allow 100% detection of chipshots and even putts. As long as I would tap before each shot of course.

I that how the CT1s work, or is shot detection still relying on the watch sensors ?