BUT AS I SAID ABOVE: if you care to take the time to watch Dougie himself sing it on the numerous Youtubes of his live performances, you will see that SOMETIMES he sings SOMETIMES, and SOMETIMES he doesn't!!!!! I don't hink it's crucial whether you have SOMETIMES in or not: both versions would seem to me to be equally correct.
The bit that ISN'T correct as John Hill posted here as long ago as 1999 is the coat-tails, and definitely needs changing.