I can only post what I hear, if nothing has surfaced by voting day you can at least gain some succour from that when you're licking your wounds the day after.
I speak to more YES voters than I do NO voters, I also speak to more Tories than I do Labourites, so while the polls are indicative of those people they choose to ask they are not representative of those I speak to.
Finding Tories voting YES in the polls is like searching for hens teeth yet I can find them quite easily, perhaps Tories that join these polling companies aren't representative of Tory voters as a whole.