I have to agree with George about the Comfort Strap on the right in the photo. My Tribute doesn't weigh 11 lbs, but it does seem heavier than my other guitars. I have a late 80's Les Paul that I previously thought was the heaviest guitar on the planet. It probably weighs about the same as the Tribute, but the Tribute seems heavier. Almost like there might be an optical illusion because of the body shape. You expect it to be fairly light, but the Tribute is anything but light.
I think the active electronics and LEDs must add some weight when you consider there are 5 nine-volts on board. Long story short, though, get yourself one of those comfort straps. It solved my problem. If you move around much when you play, you will have to get used to the strap as it tends to slightly boing around like a Slinky. Good luck!