Go slower stripe

The boat needs a wide yellow stripe around the hull. Traditionally this is achieved with "go faster stripe" from a car accessory shop.

A trip to Halfords and I'm disappointed. They stock a tiny range now and only in silver, black and red.

What use it that ? What's wrong with the nutter motorist nowadays ? Don't that realise that all these spoilers and lights strapped to their vehicle only slow it down. Stripes, that's what they need.

Until they see sense, I wonder where to get my stripes from ?