The style of trading that works best for me is a combination of discretion and rules based systems. Sometimes I start with a framework of rules and then apply some discretion in the gray area between the rules. I see this as mostly systematic trading with some discipline and discretion. In other circumstances I start with a discretionary reason to trade, such as a favorable reward to risk ratio in either direction and then add structured rules to govern risk timing position sizing and exits. I think of this style as being artistic with the addition of structured discipline. In both cases I believe that both forms of trading are a type of craft knowledge.
