I'm running the 49 port Eyeboot as well, plugged into a Raspberry Pi. 13 sticks, running around a total of 260-300 Gh/s. The pi locks up a lot, though...

...and I feel like I'm at max output on the Eyeboot. When a stick drops off or zombies, my hash rate doesn't get affected too badly. I think the other sticks recover the voltage the dead stick isn't using anymore and we chug away just fine. I've been meaning to test with a second, smaller USB hub attached so the Eyeboot isn't as taxed, and see if I can actually bump the hash rate by moving some sticks over, but I've been too busy to do it.