A knack can be built with lots of practice. At our place, there are three of us that AI, myself (natural knack), my daughter (VERY natural knack), and hubby. Hubby has been doing it for about 5 years, and did not have a knack, but he has learned to slow down and pay attention, and this fall attained 70% conception rate. It is really nice having three of us, since we breed off of natural heats, at all hours. Before we built our barn, we had our chute out in the field and would AI via headlights of the truck! We still deal with frozen lube (like Ron!), and frozen wet wipes (use to clean vulva before inserting pipette). And now the daughter does all of the AI for the diary down the road, so it was a win win for her!