There are some things you can do with just BJJ. Despite popular opinion (on the internet) most fights do not involve large groups of armed men. While staying off the ground is practical in some situations in others it is fine.
Things like grips (being able to hold someone so they cannot strike you) and throws are very useful. Landing on concrete from a nasty body drop can easily end a fight.
Just the other day a guy from a BJJ club where I used to train got into a fight with a boxer from the town. He took him to the ground, restrained him and beat him until he gave up. It can be done and this is what most street fights are like. A bunch of (usually drunk) idiots approach a group of people and one of them picks a fight.
Also (I keep repeating this), the mentality of training for a sport is healthier than imagining every possible bad thing that can happen to you. Enjoy your training (and your life) and if something bad happens deal with it as best you can.
My 2 cents.
Cam
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