Jack wrote:

I have a fiberglass single-piece shower/tub unit that I purchased with
my new home several years ago. It is almost identical to the units you
can purchase at Home Depot.

I noticed that once in a while the shower curtain doesn't get closed
right, and water leaks out. And so I'm working on installing clips and
other things, but...

I am also wondering where is the correct location to position the
shower curtain rod?

Meaning, should it be directly above the inside edge of the tub, or
should it be more towards the outside edge of the tub so that it hides
the shower unit better?

My builder did the latter, but in looking at how to minimize leaks in
the future, the former seems to make more sense. It is the difference
of about 6 inches. If I hang it over the inside edge then the shower
curtain goes straight down into the tub, while if I leave it where the
builder put it, it angles in towards the tub.

We used to have these plastic things, ~a foot long, of which ~1/3 was
gently curved to a 90-degree angle into an EL that had a couple of hooks
on the short leg, with holes on the long one. The holes would be
clipped to the shower curtain hangers while the short leg hooks would be
used to extend the inner, plastic liner "around the corner" into the
shower, leaving the exterior fabric, "pretty" curtain running straight
to the wall.

Eventually they broke, but worked quite well. Haven't seen them in
years, too bad.

I hope that makes any sense.