I have a set of Monkee Lights on my commuter. They are not cheap, but they sure do light you up. I bought mine direct off the Internet....shipment was prompt and professional. The web site says you can run one board per wheel, but two boards looks better. Two boards do look great! I tried to run one board per wheel, and I strongly recommend that you don't do that. The wheel at speed, rides very unbalanced.....feels like you are constantly surging and then slowing down, as the weight near the outside of the wheel is out of balance. I changed that immediately to two boards per wheel, exactly offset, and they work fine. Have also noted that the advertised run time per set of batteries is very conservatively stated. I am getting about 50% longer life span from a set of batteries than they advertise....which is great! (3 AA batteries per board)