I've towed cats thousands of miles, my current boat at 2.5m wide fair scares the sh1t out of me on narrow roads , luckily it mounts high on beam supports over a massive box , the hulls were passing over folks wing mirrors on one nasty wee west highland road

towed a unicorn @ 7' 6" through cornwall once (was enough ) it was touching hedges BOTH sides of the road at same time in places