Thank you all for your replies. We are taking into consideration everybody's suggestions to figure this out.

We are not actually certain the water has stopped leaking; therefore, the leak may or may not be at the current water level.

We use a Dolphin Diagnostic "robotic" pool cleaner to clean the pool with. The only place I've ever noticed it spending too much time is when it gets stuck at the skimmer or return line (it climbs the walls). The water level right now is way below that.

Dennis, were you kidding about getting UNDER the liner? How in the world do you do that?

The water in the pool right now is so nasty and green (even though I put it away for the winter spotless). This is due to the fact that a couple months ago, the accumulation of ice and snow on the top of the cover was so heavy that the cover started ripping at the seams because of the shortage of water in the pool below. We cut the cover off and let it sink in to save the pool walls. Anyway, now we have to somehow get the pool floor and 14" of water cleaned up so we can even begin to see a leak. The pool cleaner won't work unless we add about another foot of water, so that is what we have to do right now. There's no way to find a pinhole or a small cut with algae and junk floating all over and stuck on the floor.

Thank God the liner seems alright and did not shrink up due to lack of water.

I will be purchasing a wetsuit. I guess that is the only way we will be able to find the hole. Since it may, indeed, still be leaking, it could still be the plumbing underground connected to the main drain. We are really hoping that is NOT the case. We do winterize the main drain per Doughboy's directions (antifreeze).

There is no evidence of a leak outside the pool. No sand, no water, nothing.

If anything else comes to any of you, give a shout. I was in so much pain (literally!) from going in yesterday (only up to my knees), I am afraid to even attempt it again without waders or a wetsuit or something. I suppose we could really just fill it up and look for the leak when it warms up to swimming temp. But then we would be wasting a lot of water, not to mention that if for whatever reason we should have to DRAIN the pool, that would really stink!

Thanks again,

Joe and Sandy