alternate plucking

Hey everyone! As a new bass player (started earlier this month) I'm trying to get started with proper technique. Having a little familiarity with guitar, my left hand is OK, but I'm struggling with my right hand. When playing the same note back to back on the same string, should I still try...

When it comes to descending lines, my natural tendency is to rake groups of 3 per string but alternate groups of 2 or 4 per string. I've been doing this for years without any thought really. Is there a major issue with economy of motion if you are sometimes raking and sometimes alternating? I'm...