I decided to hand nail the long side of the floor. I blind-nailed it (nailing into the tongue of each board, at an angle, then setting the nail to lie flush with the tongue) and it looks really quite nice. I don't usually say this - I usually cheer everybody on to try stuff - but you can't do this if you don't nail well. If you bend a lot of nails or hit your thumb or miss a lot, this is not the technique for you. But if you can nail decently, it's not bad!
I face-nailed (nails on top of the boards, where you can see them) the first row of boards, then started blind-nailing. The last row is face-nailed too. I predrilled a hole for every single nail, which makes all the difference in the world with oak. The first row I blind nailed I fucked up a lot, but once I got the hang of it I rarely wrecked a nail or banged the wood. I used 6f's (6 penny finishing nails), because they're what I could get locally - the Internet says you should use cut nails, kind of like delicate small concrete nails, but local stores don't carry them. I know that finishing nails could pull up at some point in the future, so I angled the nails in slightly different directions, for better hold.
I spent about six hours working on the floor, and got the long side of the hall and the coat closet done.
I keep thinking maybe I should've used 8's instead of 6's (8s are 2 1/2" long, 6's are 2" long), but it's such a disaster if a nail bends while you're driving it. Really hard to pull it without denting the board. And 8's bend so much easier than 6's... I think it'll be ok.
I have some pictures and video, but I'm too tired to care about uploading them tonight :) I love the way the floor looks and feels. It's very tight, no bounce or squeak, just that slight softness you get from walking on real wood.