The method I am using is working through each video several times up until the challenge, and then spending a lot of time with the backing track trying to perfect all the exercises against it, before tackling the challenge
I'm following a similar path.
- I watch the lesson several times, while playing along with the exercises
- Next I try and master each exercise note for note as Scott played
- I then do each exercise again several times, making up my own bassline on the fly using whatever technique Scott is teaching/utilizing for the exercise
- Work on the challenge until I'm comfortable using as many of the techniques as possible - mixing techniques for the different chords (meaning for example, I don't always do the same technique for the G chord every time thru the song)
One thing I'm not doing is trying to master playing Scott's version of Dock of the Bay note for note. I'm generally good at following tabs - it is the creation of a bassline in the moment where I struggle and why I decided to take the class in the first place. So the create on the fly version of the exercises/challenge I'm hoping will ingrain some of these habits and not just entail me memorizing and regurgitating a tab.