SD to HD - To Stretch or Not to Stretch

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30 minutes ago, Brian Flint said:

I don't know if any of this helps , but that is what I do.

Thanks for the insight Brian.
In the end I wasn't able figure out how to remove the 'padding' as @androidlad had mention and got fed up searching around on how to do that. So in the end I exported two files.
1) Original format. 720x480 with back pillars so wide that I had a nightmare that they were following me around everywhere.
2) 720x480 with the width stretched from 100 to 110 to fill a widescreen monitor just a tad more, but not fully. This looks just fine for what it is.
Loaded both to Vimeo, I like the original best. And actually the interlaced version looks best despite the jagged combing crap.
I tried to figure out how to best deinterlace without losing quality but that became a slippery slope. The truth is that the interlaced material has a perceived sharpness... maybe it's just that the interlacing gives the feeling that the material is sharper. But actually there is less artifacts in the shadows and somehow the colour didn't shift a tad on export like the deinterlaced Prores file did. Strange?
Anyway.