Hmmm, as for me fighting is a always a last resort...unless I feel that a friend or family member is in trouble then I will instigate the fight to help out them. As for cheap shots, i find it absolutely wrong to kick a man in the groin or pull hair or poke their eyes.
As for strategies, personally I feel the best way to fight someone is to keep them as close to you as possible, because not many people know how to strike in close and if you are in a fight and they land a punch or kick it will not hurt as much as if they had the opportunity to put all of their weight behind them.
As for submissions, either learn a martial art or in my case I did Olympic Wrestling for about 8 years and that taught me how to defend while standing as well as how to defend while your opponent has the stronger position.
Just curious to know, how many people posting here have actually fought someone in a fair 1 vs 1 or who have had to deal with multiple enemies at a time.