I really hate it when people cite Carrier.
"For example, see here for ideas about where details that make little sense on their own (like Judas having to identify Jesus to people who had debated Jesus, or a naked boy running off) might have come from."
If this isn't an example for why we need more apologetics out there, I don't know what is.
A naked boy running off can briefly be stated as not having to make sense. It can be recorded just because it happened and a truthful recorder will do that. Let me focus on the other one, instead.
Why would Judas have to identify Jesus to people who had debated him? Uh, perhaps it might help that Jesus was to be arrested in the dark? That would be the first thing to be mentioned. More importantly are some other contextual points that one would never even think to consider when one is hostile to the texts before they even begin to examine them. A more neutral view would discover:
1. The arrest was to take place during the Passover holidays in Jerusalem.
2. Where Jesus would be is not something we can expect his adversaries to know.
3. Orthodox Jews would have all dressed similarly in preparation for the holiday.
1. During the Passover, Jews from all over the Roman empire would flock to Jerusalem. Jerusalem at the time was only about 1 mile by .5 mile in size. During the Passover it would swell to nearly 1-2 million people. Think about that many people in such a small area. Naturally, they can't all fit. During this arrest, people are going to be camped out all over the place inside and outside the city walls, in the gardens, on the hills, on the mountains, etc.
This also helps understand why such a large contingent was sent to arrest him and why a guard over the tomb of sufficient size would have been necessary. Jesus had many, many, supporters, and they were all in town. They were right to fear a riot.
2. Given how many people were in town, it would definitely have been highly implausible for the arresters, whether they knew what he looked like or not, to know where Jesus was. Try finding people you know at a football stadium of 50,000 people if you don't know where you're supposed to meet.
3. Now imagine they all look the same. Imagine that you've only seen him a handful of times and don't know him intimately like living with him for three years would have done. Imagine how difficult it would be for you to correctly identify someone if you'd only seen him 3-4 times in a mass of not 50,000 but a million people crammed into a countryside at 3 in the morning.
Though the garb has changed to reflect modern times, the rules and requirements of ritual cleanliness would have been the same and would have been fastidiously followed by all the Jews in town for the biggest event in the Jewish religion. Check out some pics:

Find the man you're looking for in there! Gee, if you've seen him and debated with several times you'll find him no problem, right?!?? Here is one I found on Google with safe search off... 250,000 orthodox Jews.. keep in mind there was no other kind during Jesus time...

Come on Carrier, find your man!
Anyone who has bothered to really understand this scene would immediately understand the difficulties involved for the various parties involved. I find Carrier, and Barker with his 'Easter Challenge' to be completely irresponsible in their creation of such 'problems.' I doubt they have, or have ever had, an objective bone in their bodies.
For example, Barker views it as contradictions that different people are running through town on Easter morning, and that they don't see each other. Yea, that's hard to understand if there is only one street in Jerusalem and only five people there. It is easy to understand if there are many streets and more than a million people.