My opinon is , that since I was a youngster it was a Friday tradition for Dad and his mate to grab a couple of six pack with a hot chook and sail out to the fairway and back .
I also follow this tradition and still sail and drink with moderation .
In forty years I have never had any accident to my own self and cancer took my Dads life before a boating accident.
My amature sailing Mate hit His head with the boom which happened while I was drinking and he was sober I said are you right mate when he replied yes I just laughed and told him that's why it's called a BOOM he replied really?

Another time i had a Chinese woman fall down the companion way stairs and disculate her ankle this was in Narra inlet on a flat calm night she wasn't drinking and neither was I As I was in command of a commercial vessel at this time.
When the 0.05 drinking laws came into play I beleve it was to protect the drunks in Sydney harbor that don't know how to operate vessels after having a few to many beverages. I'm sure the stats where not based on coastral sailors and passage makers!
Anyways nothing is going to stop me sipping on a few coldies when sailing just hope I don't run into a RBT 10 mile of the coast !