Lisping Dialogue

I used to read books about writing — dozens of them.  Several mentioned that mispelled words and apostrophes are no longer in style to show speech defects or accents – such dialogue is difficult to read.  To denote dialect, one needs to show speech patterns from the specific area, such as "It's not far, just down the road a piece." Tells you a bit about the character, and it's easy to read. Another suggestion was to use the misspellings and apostrophe's to set the character's accent in the...