When Melissa is having sex with Doug on the boat, the boom is less than an inch from her right shoulder whenever she sits upright. However, there are a couple of brief shots that look over Melissa's shoulder during the scene. In these shots, the boom is nowhere near her.
During the game (immediately following the sex scene on the field), the pitcher on the mound is left handed. But then the next shot shows the picture throwing from his right hand. Then it goes back to the lefty again.