Sooowweeee! This is one fun song. Often sung with long pauses (where banjo, fiddle fills can dance around.) Try as I might I can't find a consistent pausing pattern in Lester Flatt's renditions. I figure he was following his "inner guide" as many singers do for this one. It's pretty important though to keep track of the measures so you at least come in singing again where the root note beginning of the measure is. It could be a bit disjointed to come in on the "other side" of the measure.
Look for those Flatted 7 Chords (watch and see). Leaarn to do them.They're fun and they add anticipatory tension that released beautifully when we finally arrive at the 4 chord. Can you do a credible "G" run? Heck yeah! This is where you can use it!