Hi,
Sorry I didn't check for updates on this thread.
Here are some pictures of what I did with a section like that and the product I used. My pond is still under construction, so ignore the mess. The water hyacinths that are in front of the deck is hiding some of the liner - as you can see, I have plenty more to hide. But plan to do a mix of plants/rocks/raise water level to hide it.
As you will see in the background, I dug very near to a rock/cliff area. How in the world I'm going to hide that .... I don't know. Since these picture I stacked some rocks inside the pond and tried to bring them over the edge, but then it just looks like a pile of rocks stacked up hiding the liner. Sooooo I'm interested in the rock on a roll. Has anyone used it? Does it really look good? The video I saw on it didn't do it any favors. Since I don't live in the US, its a real hassle to order stuff and get it here, so I'd like to know if anyone has seen/used rock on a roll and actually likes it.
The product I used (grey floaty), its a long strip, in the picture its bent and crushed. I cut it into 4 thin lengthwise sections, so you don't really see the floaty. The label on the floaty says Self Sealing Fermetur Auto - I looked on Amazon, didn't see it. But I'm sure if its in Cayman, you'll find it in Home Depot or Lowes.
Let me know if you have any other questions, I can take some better pictures if you want.