Wood swimming pool deck

Hi,
I have an in-ground pool which is partly surrounded by a wood deck. Unforntunately, for most of the deck, the wood planks are perpendicular to the pool. So it doesn't look that good, but more importantly, it's not very soft to grab onto when my daughter tries to hold onto the side (she's just learning to swim). Anyway, I'm trying to figure out what I can use to line the edges of the wood deck, or if I should just buy another 2x4 or something and nail it in as the edge to 'cap' the ends of the planks. Hope this make sense. Any suggestions would be appreciated!
Dave