offset hole in the bed bolt washers

[steverino66]

I'll soon be ready to mount the bed back to the frame after installing new wood. These 8 odd washers for the long carriage bolts presumably have the offset holes to keep things from wandering side to side…?
Question: is the best plan to use a flat cutting drill bit the same diameter as washer to provide a recess for washer and bolt, making a second small hole with the point of the bit at center of the washer in the process? (this wasn't specifically covered in the instructions I downloaded from Mar-K's site)