Something I really prefer is for a fight to have stakes, it makes it more difficult to submit too easily if there's something on the line more than just simply pride & bragging rights. A tamer stip could be simply taking a pic while doing a victorious pose, but the risk of the image getting out on line is more prevalent with social media so I would suggest retro polaroid camera. Another could simply be keeping the loser's swimsuit/bikini/underwear and even making them sign it for verification. But because I'm a perv, my favorite kind of stipulations involve erotic activities; the loser getting facesat by the winner for a set time limit could be one, it could go up from there to include kissing/licking winner's feet or even eating her out, but then there is the favorite of the loser having to blow or fuck the winner's husband--usually while her husband has to watch.
This second one is perfect for this cuckold husband/jobber wife idea I want to write about but I was just wondering if such stipulations are normal or are they tame and there's even more hardcore ones; perhaps shaving the loser's head or bush. I've heard about being branded but that seems very extreme, like having to get the winner's name tattooed on you, but I would like to welcome discussion of some that have done such stipulations or others with their own ideas that would fit in the realm of realistic.