I thought today would be a really hard day, after all we learned 3 new PE's. None of it seemed too difficult to me, except for the air/powder polishing. That is something that is really difficult for me! First, your left hand is tied up holding the suction to keep your patient from drowning! This makes it impossible to use indirect vision. Second, since you can't use your mirror, you have to sit/stand in wierd positions to be able to see, making fulcruming difficult. Third, it sprays all over the place and is super messy! All that being said, I can see how I will probably use this quite a bit in the office. Although you can't use it on crowns and composits, it's really helpful for getting stain off (I can see that being a huge plus for smokers)
The selective polishing wasn't too bad, the main part to remember with that is to justify it (usually you are just using toothpaste unless there is staining) and to keep your polisher on a low setting.