Tsk tsk tsk... procrastinating? Shame on you!
Just kidding, I always do my papers the night before... never fails me! 
That's something we have to deal with. If it's with my friends or people I know, I always make sure that they approach me the right way since I may not hear them approaching me. Other than that, it can't be helped. Even hearing people don't always hear others approaching behind them.That depends on the individual. I've heard stories of hearing people not screaming when they were raped. Why didn't they scream? They can talk. They know how to use their voices. Like I said, depends on the individual.The answer is pretty much the same as #1. I do know that since deaf people can't hear, they rely more on their eyesight. So, a lot of deaf people are more alert of their surroundings cuz they tend to look around more often than a hearing person would. In a way, that's good... he/she could probably see an animal approaching from further away before a hearing person would hear it approaching from a few feet away. Sure! I have a few deaf friends who are certified life guards. In fact, I have one deaf friend who was a life guard at RIT.
I don't know if there are restrictions though. For instance, a deaf person might be able to be a lifeguard at a regular-sized pool that is private and occupied by a few people, but not at a huge heavily populated public swimming pool. But then again, I could be wrong on that. 
That depends on the purpose of the blindfold. If it was a surprise party or a surprise of some sort, that's fine. If it was a game where the blindfolded person had to guess what was heard, they avoid it. If it was a game where they have to feel something, that's fine.
Ever heard of a board game called "Cranium"? There's one part of the game where one player has to close his/her eyes while drawing on a piece of paper... until someone else calls out the answer. For a deaf person, we will have someone from another team observe and tap the drawer's shoulder when the correct answer is called out. If it's team versus team, then both team will have one person sit out and be an observer of the same.
