unicate wrote:

One doesn't have to be instrument rated to file an IFR flight plan, do
they? What about a pilot that is working toward their instrument rating?
Their CFII doesn't file the flight plan *for* them, filing is all part
of the training, no?

Technically no. However, the pilot in command's name must be listed
on the flight plan. If you actually fly the plan, that name had better
be a pilot who is rated and current for the operation. It's compounded
by DUAT which won't let you insert any name other than the account
holder in the PIC block.