Another bathroom question. I'm in the process of completely redoing my
bathroom, including sheetrock. I was able to get the old sheetrock off
from above the shower/tub with no problem, but am thinking about how I
will get the new sheetrock in place and held until I can get it
secured. It's an old building with high ceilings so it'll be larger
and heavier than usual.

Using a ladder, obviously, I want the ladder as close to the wall as
possible. I want to put one end of the ladder in the tub, but the tub
is fiberglass and I don't want to punch a hole through the bottom.
What can I do to protect from that? At first I thought a thick
padding, but now I'm thinking a piece of plywood to distribute the
weight while being more solid.