@Kharak - I work alone most of the time, and I'd like a boom operator as much as you. But...
Røde is top of the line. It's a good workhorse on top of your cam, and there are lots and lots of shots, where the Røde makes a difference even sitting on the cam. But you're right - the sound may improve, if it is fed into a separate recorder. Tascam, Zoom, Olympus, Sony and many other companies have them. Mine is a $100 model from Sony. It is five years old but it works fine. 20 years ago I used MiniDisc - clever concept, but lack of backing. It was the first syncable recorder (audio tape stretches).
More and more companies have cardioids/supercardioids and even shotgun mikes with built-in recording - Shure VP83F or VMIC Recorder from Sanamonic come to mind. Then again I'd rather stick to the Røde and buy a cheap dictaphone recorder - after all their software usually lets you record 10-20Hz - 16Khz frequence in 16bit 48MHz quality. That's better than CD quality
I'm on a tight budget, so my rig is totally improvised. But I have made documentaries all over Europe with my primitive gear. And I work alone most of the time.
It takes more time; you must prepare everything in details, and much of the time you'll have to compromise.
A small, cheap recorder with a small lapel mike can work wonders, when you're far away from modern facilities. You'll have to do a lot of clean-up afterwards in whatever audio software you use. You must consider new ways to get sync. If your cam is more than 40-50 feet away from the sound source and the main microphone/recorder, the speed of sound alone can make syncing difficult. I use a small flash light - the mike hears the click, and the cam sees the light. Voila - sync!
I teach AV, so I prepared a few photos to give you an idea of how totally crazy I am. I can only say: These odd-looking rigs have worked for me in France, Sicily Sweden, my native country Denmark, and in January I'm going to Canada to get some good footage in the Rockies. If anything here can inspire others, I'll be very happy.
