So I had started learning mandolin until my aging thumbs (worn out basal joint) were just having to much trouble with it. But for the time I was studying mandolin, I learned that your up down strokes are locked to beat and not alternating (if playing four up beats in a row you would do four up strokes in a row). I think that is tied to the way Bluegrass music pulses - and I suspect that for bass this is not how it works? Or is it? Anyway ... I decided I should start learning to use the pick on the bass just so I have it in my arsenal. So curious if I alternate up down strokes like I alternate two finger plucking where either down or up stroke could be playing the downbeat -- or?