I also found that 720x480 resolution works well at 15 fps. I made a bash script (stored the sudo uv4l ... command in a .sh file) that I can easily access on boot up. I boot up the pi headless, press CTRL+ALT+F1 to jump to terminal. Then I type in my sh file name to startup the streaming server. I also attached one of those ten dollar cell phone lens clip on attachments to it. With the fish eye attachment I can view my whole front room from one corner.