I installed a backyard/dock/deck system today for one of my current customers. On this install, I decided to use the LED deck lights (1.9w each) because of the long, multi-level dock leading to the deck on the water. I always do my calculations at my desk before arriving at the job site, and I knew that I could "theoretically" pull this off but I just didn't feel comfortable about it. I daisy chained 14 deck lights (with a 35w MR16 about half way down the run). When I powered it up, I had 12.3v at the first fixture and 11.7v at the end of the 150 string using the 14v tap. Only 6/10ths difference in 150'!!! This put my MR16 halogen at 12v, so I backed it down to the 13v tap. As I finished the job, I found myself staring at it in amazement. I don't daisy chain, and the word makes me cringe, but with the parameters of LEDs being between 8 to 15v anything is possible. It is almost ridiculous how far you can string these lights along and still have the voltage within the limits. As long as these things will hold up over time, I'm sold on the concept!