There is alternative approach to pdf viewing on e-readers: Convert pdf to a set of half-page landscape oriented images and join images in single pdf (or just view the sequence of png images on your reader).
This approach has it's own pros and cons but at least it grants you access to reasonably comfortable reading.
Tool:
Google for pdflrfwin-0.99. This software can convert pdf to set of images pooled into single zip file (just change manually lrf extension of output file to zip extension). Many free softwares can join png images into pdf (
like this one).