First off, I'm sorry if this has been discussed before, but it's been driving me nuts. I've heard countless times that punching with a conventional horizontal fist in "Da Street" is a big no-no as you'll more likely than not end up hitting a bony area and fracturing your hand (hence the photo of Tyson in bandages after his famous streetfight). To remedy this, the RBSD gurus recommend only hitting with a vertical fist or a palm to avoid such injuries.
My question is, for those of you who train Muay Thai, Boxing, MMA and other arts that favor traditional punching, how do you modify your jabs, hooks, uppercuts etc for use without gloves?