I am embarrassed to say this, but have been sailing (and sometimes teaching) for 20 years, and did not have my PCOC. I finally took the time to do the studies, write the test - and it was excellent. I was humbled at times that there were gaps in my knowledge (I assumed after being on the water that long that I knew my stuff), and so it was a great refresher. Thank you for the excellent learning modules, I would highly recommend this to anyone who intends to begin boating and especially, for others who have been on the water for years but have never challenged their knowledge. Bill Bean, Hacketts Cove, Nova Scotia