Without the ability to use microfacet displacement in SuperFly to give appropriate definition to water droplets on skin, the only meaningful option currently available is subdivision of the figure. However, high poly figures may not take many levels of subdivision before Poser gets overloaded, though you can separately regulate the preview and render subdivision levels, which will help while posing the figure.

Layers may provide the most streamlined method of applying a water droplet effect, without having to modify the base skin shader.

These posts from the SM Forum show where my SF shader was up to, and how much it lacks without microfacet displacement. Post your SuperFly Renders & Post your SuperFly Renders

This discussion between masters of the node provides a lot of relevant information and quite impressive results: Water drops on a surface - suggestions appreciated. I hope it's OK to repost ghostship's image from there

I'm also on a Mac, and in the main, have found no significant differences between platforms when rendering.

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