Have you read "A Nation Deceived?" It's free and online, or you can order a free copy and have it mailed to you.
http://www.accelerationinstitute.org/Nation_Deceived/I was pretty anti-grade skips until I read the actual research you'll find there. And the group is pro-GT child, so they're not going to push a solution that is generally bad for GT kids, you know?
Skips don't work for all HG+ kids, of course. In fact, in our case, because processing speed was just high average for DS7, we chose not to try to skip him even after reading the research. The school would have fought us anyway, so this was part of our reason for chosing another route. But we didn't think it smart to have to fight tooth-and-nail for something that didn't seem like a great fit.
But for many HG+ kids--especially those who have high scores across the board and who get on well with older kids--it really is the best option available in most schools, especially when combined with other methods like subject acceleration.
Again, read about it before you reject it. You may still reject it, as we did. But research is better than purely anecdotal evidence!