Move the P7 to your handlebar and use the right tool for the job. A flood light is to see a modest amount of visual detail to a large area in front of you. A spot light is to see higher detail in a smaller area, such as exactly where you are looking at.

If you're riding at night and looking back, you should be looking back at a set of headlights (or single light, if with a friend) and don't need a light on your head. If you need one on your head for other reasons (street signs, side views, etc) then get a spot light.