My brother lost his best friend to drowning at the age of 19. He not only saw his friend afterwards, but actually heard him speak...from inside his own car.
He took up this "issue" with our parents and, as a family, we prayed for the young man who drowned. The man had only been married for two months, and his wife "felt" him next to her in bed. My own parents "just knew" when he showed up in the house, and my brother coming forward like this was a "confirmation" to all.
This was back in 1968.
My family prayed for this young man. I don't know why this happened to the young man who perished, and I can't say that my family exactly "wanted" to see a spector, but we all prayed as a family, and I don't believe that is ever a bad thing!