<human>: Here is a goal: Make a fishing pond in back yard.

How would you accomplish this goal?

OPTIONS:
- You can use sand if you dont want to fill with water.
- Layout and dig a large round area in your backyard.Dig it out three feet deep.Then layer the bottom of it with rubber that you roll off of a roll.And overlap the seems six inches in, to make a good seal.then fill with water.
<bot>: Layout and dig a large round area in your backyard.Dig it out three feet deep.Then layer the bottom of it with rubber that you roll off of a roll.And overlap the seems six inches in, to make a good seal.then fill with water.