Raithza,
Good question, especially since this element of play is new to you. The biggest, most universal thought I can offer is that whatever you decide to try, the important thing is to not give it away. Meaning, whether you are shooting or passing, they all need to look the same as you start the motion. 5 bar shots can be quite effective, but if you take a big backswing to add power each time, your opponent will catch on pretty quickly. Usually, a five bar shot is most effective as a surprise option, not as something you do as a major part of your offensive shot selection. As with any part of the game, different players will be better or worse at blocking 5 bar shots so paying attention to what is and is not working is critical. I think that establishing a good passing series, so your (typically) higher percentage 3 bar shot is the foundation of your game, should be your priority. You may want to practice with a friend and just for familiarity, only shoot 5 bar shots for a while. That way, they are already looking for the shot so if you develop a good one when they know it's coming, it will be that much more effective when done as a surprise.
Hope this helps............................................Tyler