The prize for the ‘least popular exhibitor’ at the Southampton Boat Show over the weekend must surely go to the owner of the 100-odd foot motorboat moored in the marina.

With ten minutes until the show opened on Friday he started his engine, enveloping the surrounding boats in a huge cloud of black, sooty smoke.

Cue much outraged polishing by the nearby sales reps as they attempted to clean off the mess before the punters descended…