While pointing accurately is critical, your never pointed straight forward ... your pointed AT the Sats them self, thats it.
You live basically in LA, thats why you've never had issues with wet snow and ice ....
As for a heater, where your at ... really ?
The company / Installer will not put one on, as its not a D* supported device, however, you can put one on ...
I have thoiught about getting every once in a while, but never do.
Most of those are set up that they turn on by the temp outside .... meaning if its under 32* or there abouts where its likely to freeze, it will turn on.
I don't like that idea, as why turn on when theres no adverse weather ?
Why pay the electric for that when it happens to go below the temp that the thermostat is set for.