I have 24 ft x 48" above ground round pool. every winter we cover and in the spring, the pool has lost 1/3 to 1/2 water. But during the summer season, it does not seem to lose much.

anyway, this year I see a wet spot on the ground, so I assume I have a leak somewhere near there. I am also assuming I should find it near the current water line.

Assuming I find a tear in the vinyl, what is the recommended way to patch it? are there kits? that work under water or near water line?

thanks.