I think you are right on the money. Gore is an '08 stealth candidate. He has been traveling the country garnering support for the "global warming" movement from grassroots people up to billionaires like Richard Branson, Ted Turner and others. They have been flooding schools and churches with his movie. His climate movement can be rapidly transformed into a "Gore for president" campaign at the right time--like you say--probably August or September. The problem for him is that if he positions himself to the left of Hillary he is another Howard Dean.
You're right, and that's the scary part. Because of the constant drumbeat of propaganda about Iraq from the MSM that we've endured for the last few years, a Howard Dean-type would probably fare much better this time around. Dean himself was well on his way to the 'Rat nomination until the 'Aaaaarrrrrggghhhhh' incident in Iowa: a mistake that Algore's handlers will make sure that he doesn't repeat.