It seems there does exist some sort of correlation between screen size and dock hiding. It makes sense, people with the 13'' screens probably need more space than do people with 15'' and 17'' models!
But if this is held true, then the poll results would imply that a much larger chunk of people own the 15'' and 17'' models over the 13''. I always thought there were more people with Macbook's or 13'' Pro's than 15'' or 17'' Pro's...this is interesting!!
Anyway, thanks a lot guys for responding to my Poll, I really appreciate it 🙂