Quote Originally Posted by Sushigaijin
the only tripod tip I know, since I very rarely use one:

Hang something heavy from where the center post is, or would be. The extra weight will help keep wind and vibration down.
Yup. that works best in wind. Another good trick is to lay a beanbag over the top of the camera/lens. If the lens is big enough, I'll sometimes take my loaded vest off and lay it over the top.

Also, avoid pressing your face up against the camera when looking through the viewfinder. Leave a little gap.