I was actually in Birkenhead when they had the famous strike, between the painters and the steelworkers. In order to mark the boot-topping and hull paintlines they stretched a chalkline along the hull. The dispute was, "Who twanged the chalkline?". You could never make it up, as a scriptwriter for a comical farce! " All out, lads", but the Union Officials stayed on pay! All your Union subs went to good use, then!