I run Fog, Spot, and flood...
Fog lights are great for putting light on the road during foggy, raining, and snowy conditions, but on a clear night they don’t put enough light on the ground for me... This is their fault by design, they are designed to refract light in and verse weather. Mount fog lights down as low as possible.
Spot lights are mounted high and to the center to see further than your stock headlights on the trail. On a clear night seeing those obstacles in advance is nice. Spotlights however don’t work very well in low visibility situations, as they direct light vs refract light like fog lights.
Flood Lights are a compromise between the Fog Light and the Spot Light. They scatter the light like a fog light, but not quite as much. They are designed to scatter intense light in all directions to help see a broader path... can be mounted either high or low, but angle out at 45 degrees to scatter light intersecting with the stock headlights.