slothy turned me on to this site when I asked a similar question about the front-end on his bike. This question is going to continue to be asked a million times. It would probably be a good idea to consolidate a few posts that have already been made and describe the different approaches by good, better, best; list the advantages and disadvantages of each, and finally, make it a sticky post front-and-center.
I agree the frame rake is the best option but when I started my project two months ago, I was planning on spending around $6,000. I'm getting close to 3x that now. Not everybody has that option. Even with putting this kind of money into my bike, I still opted to just do trees (for now) because the reputable indie shops I know about in my area are closed for the winter. I can't weld for s**t and I also wasn't going to hand my brand new bike over to just anybody. Everybody has different motives, money or otherwise and we've all got to start somewhere. Just sayin'