meh i just dont see it as that huge of an issue, i dont think there's ever been a case of anyone drowning because someone was too stoned to save them, besides the ridiculous war on drugs propoganda commercial that used to air on television.
nobody cares if the emt takes a xanax for anxiety, or the firetruck driver takes an anti depressant, or your very own doctor takes a daily opiate for pain.. why are we caring here? because we want to extend our rights into others people's lives? that's simply what it comes down to.
yes i do have children, do i care if their kindergarten and 2nd grade teacher burns one at lunch? not a bit. Alcohol would be an entirely different story however, it actually DOES impair in a way that would effect these types of things. Marijuana doesn't magically make someone unable to suddenly do their job, literally millions of people are doing they're jobs every single day on marijuana and prescription meds, there's a reason they don't disqualify you from a job with a prescription. i'm not gonna allow an obvious fear campaign waged on the general public in this country dictate or overrule my own experience, and actual facts.
i guess a good question would be for the parents completely against this and ready to nail these kids to the wall over this? would you care if you just drove by the pool and noticed this? if this wasn't YOUR kids pool? what if it was a pool party? a private pool with children in it, and parents smoking marijuana in the yard/near the pool?