What are people's light recommendations (on a tight budget?) currently using 2 T6 Cree lights (one on the helmet and one on the bars) and they seem pretty good, just a bit worried about battery life.
It's only really dark for about six hours at that time of year. As I recall marshals check that you have lights fitted to your bike as you start your laps from about 10pm onwards.
If you are part of a team then the chances are you'll only get one or perhaps two night laps in, and with shorter 8 mile laps this year you'll probably only realistically need 2 or 3 hours of battery run time to cover that.
I plan to use a Cree XML T6 light which lasts for about 4 hours per charge, plus I have a spare battery. I'll also use another less bulky light mounted on my helmet, again with a spare battery.
I'll be riding solo, and depending on how much riding I do in the night, I reckon that should be sufficient. I'll also take my Exposure Maxx-D as a back up.