Hidden frog IV

Here is the frog hiding again, at the bottom of the new pool under the leaves. I wonder what they are thinking when they are trying to hide at the bottom of 2 inches of water, or if they really are trying to hide. I think that this weekend I am going to try filling up the new pool with water to see how badly it leaks. Also I have found that I can't judge the levels of the different sections of the pool by eye, the natural shapes play tricks on you. So the only way to see which side is higher than the other and where needs to be built up is to use a real level and a board or string, or to fill it up with water, since water always seeks its level.