I learn something in many years working with a team of tilers,someone have eyes and hands and someone never learn.I actually have one guy who work with me for more then one year and start laborer,couple of months was good enough to work alone,now I can't fault him,is really good and fast,some of my clients prefer him not me!.In this year I change more then 30 another ''tilers'' who don't know nothing more then a helper.I not have patient anymore,if is smart and pay attention you can see in a couple of days,not need to try and try again.