Too remove large rocks, you digger down to their bottom, to where you can shift and move the rock with a bar. Then you put some dirt in, move the rock on top of it, add some more dirt, move the rock back... until the rock is at the top. Then i use the bar to walk it to where it should stay. Put it out on the curb with a black plastic bag to have a laugh as the garbage people try to put it in their truck... ok, don't do that.

Liners are always a pain. But, what is more of a pain is trying to do it with clay.

Now, if you left the drain plug out, would the pond fill or drain?