Originally Posted by krupicka
The point of the rule regarding a directional aide was to cover the case of putting something in front of the lie to aid in knowing where to throw. For example on a blind up hill shot. A second mini doesn't really fall into that category.
Though putting a second mini down is not going to help. If you are looking at the ground you aren't looking at the basket.
When I putt I generally find a spot on the ground and practice passing directly over that spot on my way to the basket during my practice putts. Even though I'm looking at the basket I find it helps me line up my shot by re-inforcing the vertical plain between the center of my body and the basket's pole. Just a trick I use. A mini would stand out better in my peripheral than a patch of sun/shadow or blade of grass.