Hi,
ths method developed by Zarkow may be a better option.
You will need 3 scripts to do it.

1) Michael's ReconstrucCurve to convert curve profiles to polylines.
I used 12 points in my convertion.
Straight loft the polylines to get a faceted surface.
You will need to trim this surface with the polylines to be sure the
facets are not longer than distance between the polylines then re-join.

2) Run Max Smirnov's SubD Classic this will allow point manipulation if required.

3) Finally run SubD beta 9 again this from Max Smirnov.

A free Hull software mentioned on this forum is Freeship but I haven't used it.
Finally Zarkow as posted some video's on the forum showing his method.
Cheers
Barry