Stock seats almost always hurt my butt on anything but a really short ride. The result? What could have been a really nice ride ends up being an exercise in pain management. Not good.
Yeh, we all have different body shapes, pain thresholds, and riding styles, but a lot of us have real problems getting comfortable on stock seats. That's the reason I created DIYMotorCycleSeat.com. Here you'll find simple, inexpensive ways to make your seat more comfortable. Change your seat from torture rack to friend by using some basic tools, a desire to learn, and some patience. And by knowing how to do it yourself, you'll be able to change it however and whenever you want.
Learn the basics about foam basics, seat comfort, how to modify your own seat, some good links, and other stuff. Check out the pics page to see some examples that might help you think through your project.