Hi, I just discovered this board today and wish I had found you guys a long time ago. This is my 1st post so sorry if these topics have been covered. I work for an irrigation company in New Hampshire. Most of our jobs are 10 to 20 zone residential. For the most part, we pull 1.5" and 1" poly for mains and zones, and blazing saddle/swing pipe to the heads. I have heard that in FL and other southern areas, systems are installed using PVC exclusively. My question, noobish as it may sound, is: A. Is this the case? B. If so, why? and what are the major tool/labor/technique differences. C. Are there any FL installers on this board that could tell me about licensing? Thanks in advance for any info.