I have one and it is tied to the tank output before the pump input.
I'm not sure of a pump can support (seal off) a pressurized line. Also it works as a backup should the pump fail or get clogged.
If a man must be obsessed by something, I suppose a boat is as good as anything, perhaps better than most. A small sailing craft is not only beautiful, it is seductive and full of strange promise and the hint of trouble.
- E.B. White