My car TB is "Not Collectable", and not in my collection. People have logged discovering it, and I've dipped (visited) it in some caches. So I think this setup works OK.
Thanks for the reply, but T4E's post below yours just confused me again, I guess I'll just experiment until I figure out which way works.
And I will leave some feedback on this topic in the other forum as well, as this has been the most confusing thing by far to setup properly.
Thanks everyone.