You know, I've been using Google Keyword Tool a lot. I don't know, but I'm starting to think it isn't giving(showing) a lot of the long tail stuff. Often times I put in a seed word, and in the results are a lot of 2 word keywords. Sometimes I throw the results back into it with the [] stuff still on, but really I'm not seeing too many "long tails"(depends on what you call a long tail, for this I mean word count). Is there some trick to get more out of it by putting in different combo's of the seed word or something? Just wondering.
Data from GKWT is an average, so it's not completely accurate and up to date. Try entering longer tail terms. You can scrape these (assuming you have it) using Scrapebox's Keyword Scraper.
I've always wondered the same thing, I do as danny says. Use scrapebox KW scraper, save all KW's then import and sort by local searches. Much faster than manually thinking and entering short tails but still not as fast as using a research tool.