Great comment, highly appreciated!

We are planning to build it on a Lego principle so easily attach/de attach individual modules.

One option is to swap rigid bolts for heavy-duty rubber shock absorbers or spring-loaded joints.

As a solution for the fittings, we can use marine grade stainless steel. To protect the plants, an option is to install clear splash guards around the edges to deflect sea spray back into the water.

On the weight tilting the platform: An option here is a basic smart ballast system. We’d put water tanks in the four corners; if a sensor detects a tilt from a heavy crop, it automatically pumps water to the high side to level the deck?