Simple Way to Create a Closed Loft

If I have a series of close curves, is there a simple way to create a closed surface from them?

I.e., have the ends closed off.

I found that patch on the end frame and join appears to work but I was wondering if there is an easy way or if I was doing it the wrong way.

If the end closed curves are planar, you can run cap and that will close both ends. If not what you are doing is one a simple way.
Lofts do not close automatically.

IHTH Randy

Thanks,

Yes, the curves are planar.