I can't seem to get Superfly to render the flame like Firefly changing just the PoserSurface transparency stuff, but maybe a Supefly-specific EdgeBlend driving it would work ? But I'm not going to go down that path - I'm giving up on getting this flame shader to work in Superfly.

So over to all you Superfly users :)

If anybody has alternative Firefly shaders please do continue posting. What I've got now* is, I think, good enough for me. But maybe not for everybody.

*  I'll package it up and release it as a freebie - no ETA. Sitemail me a reminder if I forget !

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The 3Dcheapskate (also available in DAZ and HiveWire3D flavours) occasionally posts sensible stuff. Usually by accident.
And it usually uses Poser 11, with units set to inches. Except when it's using Poser 6 or PP2014, or when its units are set to PNU.