Display only unread posts?

[skr 1]

When I have a particular thread displayed
is there a way to toggle between display
all posts and display only unread posts?

In my display profile I have set it to jump
to the first unread post, but it always goes
to the root post anyway.

Maybe my more general question is about
window management and keeping track of
where I am in the hierarchy of forums and
threads. (Life was simpler 10 or 12 years
ago on rec.skydiving when there were maybe
5 or 6 posts a day :-)

Anyway, right now I use 3 mozilla windows.

First, on the left side of the screen, is the list
of forums.

Second, displaced a couple inches to the right,
is a particular forum with the threads collapsed
to one per line. I started with all threads expanded
but that would take a long time to display.

Also, after hanging out here for a bit I see that
there is way too much traffic to try to read or
even scan it all, so now I just look at a few threads
in a few forums.

Third, displaced a couple more inches to the right,
is a window with a particular thread in it. Here is where
I would like to toggle between just display unread posts
(the default) and show all posts in case I need to backtrack
for context.

With the list of threads in window two I can also tell
whether to hit next thread in window three, or close
that window, scroll down the list of posts in window
two and open a new window three with a new thread in it.

So how do you guys approach this?

Have I wedged myself into a really clumsy technique?

Is there some way I can skip lightly from thread to thread
like tracking through a sky full of puffies?

Skr