You’ve seen this, right?
http://www.londoncyclist.co.uk/raf-pilot-teach-cyclists/
Human beings are crap, basically, at seeing small moving objects unless they’re looking directly at them.
I really don’t mind looking like a bit of a dick….
a: I’m dressed in cycling clothes so I’m already there
b: I’m on a bike, see above
c: It’s infinitely more preferable to spending an extended period in a hospital or morgue
so I’ve just got one of those ‘Polite’ jackets that makes me look like a copper and some of those wheel spokey dokey things that make your wheels look like they’re at the funfair.
Of course people still don’t see me and nearly kill me but I’m assuming the more annoying and stupider I make myself look, the less chance there is that people won’t see me.