If the pool is drained by mistake and the liner has floated, make sure to keep the liner wet. This will prevent it from possible shrinkage.
They are caused by subsurface water. At sometime your liner floated and then went back down. You should check your drainage.
A good leather repair shop will replace the liner of a leather jacket. A tailor also has the tools and skills necessary to make the repair.
I doubt it, Gunite is normally used in swimming pool structures and it could very well look like asphalt
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There are a number of products you can use to prolong the life of your pool. You could install a wall foam between your pool wall and the liner to keep a smooth surface next to your liner to help prevent punctures. You could purchase a liner pad or pool padding for the bottom of your pool. And you can invest in vinyl liner repair kits to repair the small punctures and prolong the life of your liner.
I suggest searching for the answer on eHow.com.
There probably is, but I have no idea what you're asking about.
Remove the old damaged liner and install a new one.
Sound like a doughboy pool. If so you will need and expandable liner, they are 20 to 25 mil and have to be "floated in" ,get a pro for this DO NOT try it yourself liners are not cheap.
Repair it or line it with a plastic bathtub liner.
You can get the pool product you need at http://www.cheappoolproducts.com.
To repair an indentation in an inground pool liner, first, drain the pool below the level of the indentation. Smooth out the area by using a roller or your hands to push the liner back into place. If the indentation is due to air or water trapped behind the liner, you may need to create a small hole to release the trapped material and then seal it with a patch. Finally, refill the pool to check if the repair holds and the liner remains smooth.