Which Pinpoint Mode Should I Use On My E-Trac?

Normal mode is good for rapidly and automatically narrowing the audio response of a target.

Sizing mode is better when you want more control and don't want the detector to vary its baseline. The baseline is set by the operator when entering pinpoint. This is good for mapping a consistent outline of a target. It can also be useful if working in trashy ground when there are issues with adjacent targets.