New film shows how surfing helps women find friendship and purpose later in life

When Margaret "Marg" Cummins closes her eyes, she can still remember the moment her love affair began. 

And like all great love stories, it began with locking eyes.

"I have never forgotten the first time I was on a wave … I looked over and there was my friend on the same wave — I just shouted, 'Look at us'," she said.