I may have made a bad mistake when closing the pool for winter.
I drained the return lines and the skimmer line ok but had troubles with the main drain. I was able to blow the water back (from the pump to the drain) a little ways, but no where near all the way then quickly closed it off. My (incorrect thinking) at the time was that the main drain line would have run far enough underground and that I "pushed" the water back enough that it would be below the frost. But, now I realize this probably isn't correct.
Now that the thaw has started I'm worried that the line may have cracked or ruptured due to the freeze. Now I'm anxiously waiting for the thaw. My question is, if the main drain line does start to leak, is there a way to plug it (temporarily) without going in the pool (too **** cold right now)?