Hello, just found this site and hope I can get some good advice. Bought our first home little over 2 years ago and in the backyard there is a small pond and waterfall. Have a 2 year old son and 2 month old son and currently we dont use our back yard because of the pond. Its in the open and too much of a hazard for the kids. I'd like to get rid of it and put a play area in its place. The pond has a plastic liner that goes in the ground. Do you recommend I leave the liner in the ground and fill it in or should I take the whole thing out and fill it in? I would have no use for the liner. Are they sellable or would it be junk? Thanks for any suggestions.