On Mon, 3 Sep 2007 07:21:45 CST, "RichToyBox"
wrote:

When you install the bottom drain, concrete around it to prevent it from
twisting or shifting. Pull the liner into roughly the final position,
making sure that there is liner enough to go around. The hole for the
bottom drain can be cut into the liner and the bolts attached as the first
thing done. Start filling with water and pull the wrinkles out, working
outward from the bottom drain. Wait until the water level is up to the
skimmer opening before cutting for the skimmer. The weight of the water
will be pulling down on the liner from the top as it conforms to the exact
shape of the pond and could pull away from the skimmer.

IIRC, we installed the under-the-liner part of the bottom drain (with
concrete as RTB mentioned), and the little stub of the skimmer poking up.
Laid the liner and filled. This made the liner tight over those areas, so
the next day when we emptied, we knew where we'd be cutting... granted,
because of the skimmer pipe in the bottom, we had to lift the liner, glue
the small extension piece, wait to dry, and then wiggle the Greg Bickle
pipe boot over it. Can't remember if guys marked the liner... but I think
the markings, the bottom drain hole (which we had plastic wrap over to keep
dirt out) and screw holes remained indented in the liner. Kind of like
pillow marks on your face when you get up. ;-) ~ jan
------------
Zone 7a, SE Washington State
Ponds: www.jjspond.us