My mom is a locker who started with fine hair. Define fine. Straight, slightly wavy with frizzy areas in patches. Her hair was hard to lock and I had to start her locks with a teased, backcomb motion and interlocking in a R4 pattern. This install has allowed her hair to lock without unraveling, giving her the freedom required to grow long locks without root.
Now, going on a decade of locks, my mom has faced similar challenges as a seasoned citizen with locks. And, the pros consistently out weight the disadvantages and she loves them! She's a hair model, featured in The Knotty Truth Lock Manual. We started her locks with a hybrid combination , 9yrs later, in her 70's, she has long locks that compliment her lifestyle.