I think I'd stand in the market square in Nablus wearing a singlet with the Israeli flag and challenge jihadis my age and size to a one-on-one fight without weapons.
There was a guy at Renzos in NY who would destroy some high level guys, guy competed for the first time a year or two ago in the masters like 4 division lol.
I remember a story on here of someones training partner, dude who was a big time hunter etc would come in once in a blue moon, be competitive with all the pros, and disappear again for a few months lol (I might have hacked that story up)