I'm another FG hill climber. These days, most of my serious hills are just for fun, though I've had commutes with hills in the past. I stay seated as long as possible, then stand up and power through the rest. Sometimes, walking is involved. After a few tries, I can usually take the hill without any walking.

One interesting thing with a FG/SS is that you can calculate exactly how many turns of the pedals the climb will take. This can be useful for determining an exact location during the climb and figuring out how much energy you will need to complete it.