why not offer the advice to them on the beach?

These people do not know any better! They also do not read this forum. My approach to people is to firstly be friendly and approachable.

Tell them what your concerns are and perhaps offer some sensible alternative. Works for me*.

Except for a dude I seen out at Woodies last Friday. Offshore beach 25-30knots this guy puts his young child of below 10years old between his LEGS stood on the board the kid was wearing a crash helmet! Anyway they ride out a few 100 metros offshore an do a few tacks etc. I could not believe what I was witnessing! I was was flabbergasted!

All was daisy until the wind jacked up to 30 knots and blew them into the ocean with the guy body dragging around in an attempt to pick up his floundering child!

He managed it and they both dragged in - Honestly it was the most wreck less, selfish and stupidest acts I have ever witnessed.

To put your child in such 'potential' danger is absolutely ludicrous and the guy should be bloody ashamed. If I see him again I will surely be having words.

*unless they are total morons.