I'd drink 6 beers and drive my kids to church if I had 8 hours to process the alcohol. I'm an accomplished rower and have no problem or moral question with taking passengers in my boat. Liquor and boating isn't a great combination on the surface, but that's for the individual to decide. I find great enjoyment having a cold beer on the river and in no way would worry about it contributing to an accident. Now if a guy is inexperienced and throws down a 6 pack before he gets in the water, then yes I'd be concerned.