i had a small 80 gal goldfish pond where this one is so i put that gravel in the bottom along with new gravel, pond seems to be clearing faster and i just added the gravels yesterday (the old gravel i mean).
well the pond is basicly squar, so i put a bug wrinkle in each corner and there are a few little wrinkles along the sides, but its not like it affects the fishes health (wicj is really all that matters to me) as for the rocks, i just picked them up and set them where i needed them to be, execpt the one in the south east corner it was about 250 lbs so i rolled it the best i could and placed it over a 1 1/4" pvc pipe thats sunk in the ground for overflow.
right now theres two guppies in it, big pond for two tiny fish, and i only put about 1 lb of salt per 200 gallons so ill add more.
and also the liner is firestone 45mil wich is really thick and rubbery and doesnt scrunch up when you walk on it like the 20mil stuff that comes in pond kits.

yes he is...lol....now the pic is too small...
he eats bee's lol...saw him takin 'em off the top tonight. kinda cool
)