I run a pair of TT Denali LEDs in addition to my headlights. They consume only 10 watts each and work great as daytime running lights. From a distance they look like they are larger than my headlights and the whiter color makes them much more visible. The are so visible in the day, it appears as if my stock headlights are not even on.
If you disconnect one of your headlights to save the 55 watts of power it consumes, you may consider a set Denali's for extra daytime visibility.
2011 Bullet SXR1100