Yes..with pdf I tend to fit the page to the window width and/or zoom and turn off the side panel (uncheck show index) and scroll pages with the mouse or arrows for as much screen width as possible.
agree finding the page later is a pain sometimes. I recently tried evince that hata_ph created for bo7.1 to replace epdfview and was delighted to find that when I reopen the test books they were at the last read page.
switching to epub from pdf may help,find the page at least. I think manybooks offers epub in addition to pdf not sure about google books.
I use fbreader and calibre although fbreader is lighter it is cross platform and reads several formats, it also opens to the last page read. I have it on smaller devices as well as the laptop so transferring files is easy.
calibre allows you to edit, add book covers etc. in addition to reading epub and pdf. I have many books from project gutenburg as they are free or donation classics and often do not have a cover. I think I seen both fbreader and calibre in the VL repository for VL7.1, and have fbreader on VL7-light
hope that helps