wearing hats to hide baldness never made sense to me, how are you going to wear a hat indoors, at work etc
it would look like hey this guy looks normal, then you take off the hat and it's like gatttdamn that's one ugly dome
you need to offset it.
a cool facial tattoo might be too extreme.. but maybe cool facial hair, 220 pounds of muscle, a confident smirk and a hot girl on your arm. Nobody will care about the dent.
OR - embrace it. Make up a cool story about how your motorcycle crashed while stopping a bank robbery. Roll with a cool nickname like "Dent" or "Coney" or "Lobotomy'.