Three strand twists plus interlocking
Interlocking can be used to achieve a well manicured loc look at the roots.
My client's curl pattern is a type 3. So even with my braiding with tension, her natural curl pattern re-adjusted the wide of the braids on their own. We used perm rods and Tropical Roots Foam to dry set her hair.
With locs, how you start them does not matter, as they mature, they eventually transform into perfect locs.
Often times if people have Sisterlocks or interlocks with too many loose ends, then I often recommend braiding the ends. If you think about it, the braidlocs locking approach is in reverse order.
My client will require a followup appointment to finish interlocking the back to achieve a well manicured look. Based on time constraints, we completed the core braiding with the intent to retighten roots at her followup appointment.