Arthur...good post! I agree. 3D can definitely help you in the field if done right. There are no dots on the side of a der so you can practice putting that arrow right where you want it on the body and get a good feel for what you are going to be looking at when you see that deer in the woods. You can also shoot your 3D target from different angles and take a look at the path that the arrow is going to take on its way through the animal. IBO and ASA is not 3D in my opinion either if you are looking to practice for hunting. I get frustrated at 3D shoots because there are so many guys with the super target bows dominating the shoots so the average hunter has no cahnce to ever compete as far as any kind of points are concerned.