I don't think there is any set way to spell dialect words that have not been accepted in the Oxford dictionary. Just the way interested parties have translated them into the written word from the sound. So anything goes as far as I am concerned.
It's so easy to put down the sound in your head when answering on a forum, I do it quite a lot.
Am waiting for someone to write 'chimley' for chimney...
Wonder/wander is a common error(Mick does it ... LOL). Sure he knows the difference.