When riding a motorcycle, you should:
Always pick one part of the lane to occupy and never leave that part of the lane.
Vary your lane position as conditions warrant.
Only ride in the center of the lane so other vehicles can see you more easily.
Ride in a zigzag pattern so other drivers notice you.
There is no one lane position that is always best, nor one that should always be avoided. Change your lane position as necessary based on changing road and traffic conditions.