I put mine in by myself when i couldnt find somebody to braid me up for a sew in. I got tired of waiting on people to get my hair done
Beginning from start to end it only took me 3 hours, and thats normally how long my installs take to do from braid to style. I think having never even seen the process done other than in youtube videos I did it pretty fast.
Alot of people said to me before hand " dont do them on your own" " youll cut your hair off" but its not rocket science. You get a loop , put it around some hair , stick the i tip through and clamp it down. Maybe its because im used to (trying to) braid my own hair but it really wasn't that difficult.