Anyhoo, I went round the edge of the cliffs and beaches with some Woodland scenics Realistic Water, to add a 'wet look'. Once dry I then mixed some white paint and Water Effects together and went round again adding in wavelets on the beaches, and water splashes against the rocks.
I also painted the top of one of my games tables sea turquoisey blue (It's a Dulux paint, local shade known as 'Otaki Forks')
So there you go, basic Isle, suitable for many settings and scenarios... but you know I couldn't resist dressing it up a bit, so dug out my jungle vegetation and some rocks and let my pirates have a brief explore!
"Arr, there be treasure here mate!"
"So, where's that darned 'X' ?" !!!
Hope to see it in action, sometime soon! Though I will need to finish off my little jollyboat, so my pirates can at least get from ship to shore! ;-)