I disagree with the more frequent safety idea against lower players. I'd rather a weaker player attempt to out-shoot me, because they'll most likely screw up and then I'll punish them. When I was lower rated in APA, getting a good safety in there could allow me to keep up with better players. Better players usually want to run out on you.. they best way to beat them is to stop them from doing that.
If you're worried about a better player responding to your safety, try thinking how a better player's going to respond to a flat-out miss.