I made a printable document that shows seven blank fretboards. Make your own patterns and study the fretboard. Feel free to download and share.
Click this link to download a high quality pdf:
Blank Fretboards PDF
Remember to check out my eBook entitled Fretboard Visualization, for learning a step by step process to memorizing the whole fretboard, learning music theory, and take the next step to becoming a better bass player and musician.
A Thought Process & Mode Theory for Bass Guitar