This is Aquatex. The only thing that I did was paint the underside Camouflage Green. The reflections pull everything into the water.
How do you cut the Aquatex to fit all the structure? Also, how do you float your boats?
The structures are sitting on the Aquatex. Using a paper template of the roughed in harbor area, the glass company cut the glass using long straight cuts to connect the largest areas. The piece of glass ended up with 5 straight line cuts.
The boats sit right on the surface just like everything else. The reflections pull them down into the water. The beauty of the glass is that you can freely move or remove objects sitting "in" the water.