Hugh found this video on Facebook that shows another way of working with cotton to create white water.  This time substituting resin for the acrylic medium.  You can find it at the Facebook line below.

https://www.facebook.com/100009401096349/videos/pcb.1836955686627783/1836952203294798/?type=3&theater

Here's the translation of how he produced the water effect.  I'm not familiar with this type of resin but I believe it is water based.  The builder soaks the resin in cotton and adds it to the sea scape.  Then forms to his liking.

"Soak cotton in the emulsion resin and make a wave.
After drying, reinforce with resin and add accents in white.
This time it is a shrimp fishing boat produced in the dark of two years. At this time, the tutorials were asked to do so, and it's as soon as I was going to take the video. The waves of the sea-level are expressed with cotton and emaruji~yon resin. After the drying, it is done with the reji and the accent is finished with a white accent."

If you look at the builders other pictures you'll find a deck had heaving into the sea.  That's a new one on me.  I wonder if Hugh could create that in 1/700 scale for us!  😛 Thanks for sharing Hugh.
Dave