I don't understand why child lovers seem to think Thailand is any kind of a good place for pedophiles. Maybe if your a boy lover... and then just maybe.
The kids on the beach are clothed in long sleeves and pants, occasionally there was a Thai boy with just pants on, but for girls it was dress like your in Siberia and this was with temps approaching 100F.
On top of that from observing the local culture and talking to people it seems males are not supposed to be around female children. It is very looked down upon. Short of some fathers taking the kids to eat or something and even that was pretty uncommon I never once saw a male with a female child.