With your equipment setup routine confidently completed, the next options are simple: measure what is there or stakeout / navigate to what is supposed to be there.
While driving a Topcon LN-100 layout navigator with the no-cost app of MAGNET Construct, the instrument will constantly track the center of the glass prism at the top of your lightweight pole. As you move, it moves. You then are able to position anything within the instrument's working radius. Real time repeatability on the go!