Many thanks Lyrra

I'll just have to play around with "hemming" the hood then, by the sounds of it... seeing how Poser is liking it, when turned in to different extents. If the hood stays up, the depth, that the hem needs to turn back in, to form an inner surface, will be less, I guess.

I'll stick with morphs for larger / smaller / in / out etc at first for the hood, I think.

Keep it simpler! Well, will see how it goes once I start with rigging.

I'm imagining, and prepared for finding, that rigging the hood could be a challenging exercise in itself. I'll be challenged just by rigging the rest of the suit, I expect! LOL.

Conversions... I will try WW. But could just revert to, more laboriously, manually re-fitting in a modeller, or with morph brush, if that doesn't work out. I thought WW might help for starters... hopefully.