I know when I'm off work or going to work so I set timed action in my case "morning" and turn BT on.
play with the built in suggestions they're usable as is for most of them anyway.
I really love how it will ask if you want to set a smart action, it keeps asking for my work action but I'm not there yet.
This app should be on every smart phone out there, and the Maxx doesn't really need it but:
Energy is power, and power is everyone's business!
Same here. I have a smart action to turn on BT when I'm charging. Whenever I put the Razr on the car dock and start charging, the BT turns on and automatically links to my car in about 10 seconds. I haven't found an alternative way, but this method works reliably and quickly.
Just leave bluetooth on all the time. It really doesn't take that much battery in my experience. Leaving wifi on all the time takes more battery than bluetooth so I only turn on wifi when I need it. The other way, like has been mentioned, is to plug it in or put it in a car dock and tell the bluetooth to turn on every time it charges. I'm too lazy for that.