I am a firm believer that you should practice all sorts of different positions while shooting your bow. Any bowhunter should know that everything isn't always going to be set up for the perfect standing broadside shot. Don't hesitate to set up your treestand and shoot from there. Also, kneeling, sitting, bending around a tree, anything. Your sites will change and you need to be used to these changes or you might end up with an injured animal. As far as how many arrows to shoot per day.... well alot of that depends on how you are shooting that day. If you are having a bad day and you keep practicing wrong, you will end up forming bad habits that will hinder you later. Shoot until you are starting to mess up. Take a rest and shoot again a little while later. If you continue to mess up, take a longer break. How many arrows anyone shoots should depend on their personal limits.