Use Surfaces > Skin to create a surface by connecting a series of profile curves.

.
The tool creates a surface between the two curves.
and click more curves to
add to the surface.
and click the previous curve
again to undo the last part of the surface. Curves can be deselected
all the way back to the first curve.
to start a new surface.
The resulting surface is too complex or has parameterization problems?