Have I ever called on the DX's frequency?

Yes.

Have I ever missed my call?

Yes.

If you haven't made these, and other mistakes, you probably haven't
been DXing long.

Do I use spots?

Yes.

Back in the 80s the W7PHO net would hold your hand during a contact.
They even repeated your call and reports at times. Is this any better
than using a spot? Did I ever check into the PHO net.

Well,yes.

Win, w0lz