So whats wrong with the tweed cloth cap ?
Dont all Gentlemen Disco and RR drivers wear them ?
I own one !
Get some funny looks at times but it keeps them at bey and I can go about me business with plenty of elbow room, eh.
Thing is, you have to keep a straight face and look serious.
Mine's a brown check colour and matches me RM Williams boots!

If you spot me at Louth or somewhere, I am approachable, really.
Cheers, I think.