Use the slick trick.. it has the same point of balance as your field point if your shooting a 100 grains BH. Whenever you look a broadheads to use for hunting and are practicing with practice tips. You should find broad heads that are the same length and balance point of your shaft. Otherwise you will hit left or right. It also matters on the tune of your bow. This is also assuming you have the correct arrow spine. Even if the chart says it is, It sometimes is not true. There are other factors, but I will am giving you the basic ones because this could get to long for me to discuss.
When you take your bow to a bow shop they are only tune for the normal 25 yards. Other than that, you will have to tune the bow yourself because everyone shoots with a different grip pressures and styles.
Look up the walk back method online.. but use your broad heads to tune the bow. Using this method is the best method..
There will be a lot of different options on how to tune a bow, but I can assure you wont be disappointed.
I have been a bow tec for 15 years,, so I know a little bit.