I had one of those bulb horns ^^^^ on my old Trek commuter when I lived in Edinburgh. It was lots of fun and yes, it did get a smile out of walkers on the disused railway lines.

Unfortunately, when used in anger on the roads it was useless – if you squeezed it too hard (and I always did, cos I was ANGRY) it made a pathetic wheezing noise, inaudible to anyone but me.

Last time I was at Beamish Museum gift shop I was this close to lashing out £28 on a massive version of the same horn – I parped it in the shop and caused several people to have heart attacks. Or at least drop their novelty pencil sharpeners…

We never have problems with the locals, just the tourists, who seem to think they've paid for a jolly in the Peaks and why the hell should our quiet, countryside walk be ruined by some trail ruining mtbers.

I always politely say 'ding ding'. On the odd occaisions I've used a bell the ramblers jump in fright.