Re: Closed scales?
I guess it will be difficult to stick to closed positions under all circumstances, even after getting used to the scale length, i.e. some will work and some won't.
My pinky is small compared to the other fingers (I always envy those who could put a wedding ring on their pinky), so I rarely use it anyway. In melody mode, I frequently change position with the whole hand and shortcut passages with double stops. In accompaniment mode, I play mostly 2-finger chords and double stops all over the fretboard, but nothing stretchy, i.e. I do what zouk players do.
Both playing modes do not exclude each other, there is a whole range of mixing, which comes in handy on a scale length between madonlin and zouk.
Position change can be done with a minimum of wound string squeaking; just release the grip in one position, shift with elevated fingers and tighten the grip again in the new position (looks a bit like what skiffle bass players do on their broomsticks).
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