Yes, if you know where the hole is. Walmart has a patch kit for underwater repair. Last year they were $5.95 - 4"x4" patch, cement, instructions. I am sure pool shops offer this too if you feel better about buying products there.
Look for water
Buy a pool patch
Drain the water to below the level of the leak, and let it dry. Glue a patch over the hole, and let it dry according to the directions in the patch repair kit. Refill pool and enjoy swimming.
Many pools have vinyl liners. As the pool ages, the vinyl liner will oftentimes become cracked. These cracks cause water to drain out of the pool, which can result in greater damage. One should never fail to repair this type of leak. The best way to repair this is to patch the crack or hole with a patch kit. These patch kits can be bought both in stores and online. There are different types of patch kits, some of which are meant to be used above water and some below the water. This type of pool repair is relatively simple.
You can't ... since the above ground pool is made of vinyl material, you need to apply a vinyl patch. Has to be a like material to be compatible.
look for water coming out of the pool? after you find water on the outside of the pool take a red food color on the inside ans squeeze it in the area and when you see the color being sucked to the wall and disappear there it is and you can get a under water pool patch kit at home depot for about 6 dollars.... Hope this helps you out
a hole
Depending on location, water underground can be is a layer that can be tapped anywhere in that area. Other places, it is in a stream, much as it is above ground. You dig a hole and go a little past the level of the water, install a casing or pipe for collection and a smaller pipe inside of it to pump out the water. Shallow wells have the pump above ground and deep wells have it at the bottom of the hole. It is easier to push water up from the bottom than it is to pull it up.
patch
Use a good quality cement and push the cement in as far as you can, if it a thru-hole, do the same on the inside, smooth one or both patches flush. If its below ground level apply a "Tar base material" to the patch after the cement dries, this will help in waterproofing the patch.
Yes, pool companies sell "Under Water Cement" and patch kits. If you hole is bigger than the usual patch, ask the pool company to sell you a piece of used liner.
Duck tape