With desired team and playing 5-on-5, the inside shots are the easiest to shoot. They will go in 99.9% of the time if you know how to shoot.

From the main menu go into "My NBA Live". Select "Options", then "Gameplay Settings". Press R and set all the attributes up to 100. Press L and set all of the attributes down to 0. You will rarely miss a shot and the opposition will miss nearly every shot, including dunks and layups.