You mean from a bulk roll? I use a changing bag to load the film into the loader, then roll in daylight. I just remind myself that the first frame and last 2 won't come out, and load and unload my cameras accordingly.
If you load your rolls in the dark, you need to figure out how long a 36 exposure roll is. I think it's like 2 arm lengths for most people or something like that.
If you mean for developing, then I use a changing bag. A closet is better because of the extra room, but make sure you have somewhere where you can lay everything out that you need. That's the real benefit, in my opinion - knowing the scissors are _there_, the can opener is _there_, etc.
allan