I watched a few bike specific videos as well, most of them were some incoherent guy in his garage... But the points made were to determine beam center distance from your low beam headlight's beam center. You may want to point your right side spotlight or foglight more to the right to illuminate the roadside or ditch, but the left side foglight or spotlight you may want to aim closer to your low beam headlight's beam center to avoid blinding oncoming drivers.