So this is what i've been doing, but it's pretty involved. Is it too in depth (i asked this on talkbass)?
Take a major 7th arpegio in F.
Start 1f E string I try to go two octaves and come back through the inversions. Thus:
G----------------2--5--9---10-9------------------------------------------9--10--14------
D---------2--3--------------------10-8-------------------------------10-------------
A-------3---------------------------------8--7------------7--8--12------------------
E-1--5------------------------------------------8--5---8--------------------------
There is one final part, but I couldn't fit it in this diagram - the final inversion and then back all the way to 1f E string.
Not only that, but when i intend to start the exercise afresh with each subsequent inversion. This example is the root inversion (F, A, C, E), it comes down with the first inversion and so on.
If that's clear