I don't think I would ever choose to curl up in a ball. I think you would lose advantage being on the ground. If you have a truly hateful dog, then that seems like you're just saying "go at it". No defense with this method. I would have to exhaust any defense options first before I would do that, in my personal opinion.
I've been attacked twice, and none of those things would have helped me in the situations. I do agree that my frantic screaming the first time probably did make it worse.
I walk my two dogs - on leases and actually attatched to me. The problem with having two dogs attatched to you is that they easily walk around you and, inveriably, they both go around and behind you and so in a split second you have your legs wrapped up in their leashes so that you can't move. This is a big, huge problem!
Both times, the attacks were out-of-the-blue and happened so quickly as to have no time to prepare. Their wasn't any warning. I find that if dogs are going to attack, they can do it at warp speed and are on you before you know it's coming.
To be more clear, they weren't attacking me, but my boy dog. But, to me, that's still an attack on
me. So, both times, different dogs went for his neck first. So, I'm doing my best to keep both dogs from being hurt. That's hard to do since their are two of them, wrapped around my legs, and honestly, I don't think they understood this was an "attack". However, after the second event (and a third time for my boy if you count an event at the dog park), my boy is now a bit more aggressive. On this street are fenced in, big labs that used to always bark at him and would scare him -- but now he tends to bark back and want to go into their yard to fight. Yes, he's neutered. But, the attackes really get to you. And, it can make the dogs more nervous. So, I have had to start teaching him not to bark at the labs and lunge toward them, or to run away quickly, but to walk calmly by them. As for me, now
I'm scared anytime I hear an unfamiliar bark.
The first time, I had the dog mace on me. I was at my mailbox, and it took 1/2 the spray bottle to make it just across the road to my steps. The dog, at first, ran off, but then he came up the driveway to attack again. I used the rest of the spray bottle and made it in the door. If I had been farther away, he could have attacked again. Overall, the spray was a moderate success. But, he was aggressive enough that the first spray was not enough. He had a history of aggression. A couple of days later, he tore off a inexpensive screen door while trying to get inside my house to the dogs.
The second dog was an alluff, un-friendly dog which we walked by daily. Many times I had tried to make friends with him to no avail. He never tried to attack, though. One day, another dog was visiting this dog. This visiting dog is friendly. But, the unfriendly dog decided to be a "show-off" for this other dog. So, he went after my boys neck. It was triggered only by a need to show being a "top" dog. Of course, he wasn't friendly to begin with, so it didn't take much for him to go over the edge. I know other people who lived near him were frightened of him because he was clearly unfriendly.
So, what to do? I can't kick another dog b/c I'm so busy trying to keep my dogs from wrapping around me and getting us all safe. For a while, I used a walking stick, but it gets bothersome to always do that. But I did have it with me in the second attack, and hit the dog a number of times. It would go away, but them come back for more. I made it up a hill, and went into another neighbors yard (looking for someone to be home and let me in their house!) and onto a deck. This dog had
never went up to these people's yard before. Thank the Lord that this deck only had a 3' wide opening. So, I was able to get my dogs behind me, stand at that opening, and hit the dog as he was attacking. He finally left, but I could see him "patrolling" the street up and down, and honestly, it seemed like he was holding his head extra high like he had really accomplished something.
So, yes the long stick was useful that I could reach the dog with it. But, in both cases, the dogs
continued to attack. Once wasn't enough.
Oh, and by the way, I live in a nice neighborhood on a dead end street. This stuff can happen anywhere.