ignore an entire thread

[tspacepilot]

Is there a way to ignore an entire thread; to prevent replies to it from showing up in my 'new replies' page?

There are some threads with like over 300 pages (so the option to show all pages doesn't appear) and I posted somewhere back in that thread some years ago and the thread is still continuing to this day and I haven't looked at it for years and now I want to ignore it.  I'd love to be able to do this without trying to find exactly where I posted in order to delete it.  I mean, if a thread has 300+ pages and I have thousands of posts, it's not so easy to find a particular one.

Because I tend to use my "new replies" more than my "watchlist", I would love a way to ignore an entire thread.  Maybe I just have to learn to use my watchlist?

Thanks for any tips.