What is the proper strategy to counter early rifleman rushes
It has sort of been stated already but you can build a pillbox or a flame tower and wait to place it. Make sure you place it well and at the right time. Additionally, select the defense structure and target the rocketeers- taking them out first will keep your structures alive. If you are getting a heavy swarm and have 2 pill boxes near each other set them as group number (ctrl+ a #), now you can press the number and be ready to start clicking on enemy units. If you don't know about pixel doubling the default hotkey is " . ", press period and it will zoom in, this can help with clicking and deciphering units.