How much spoiler deployment?
How do you decide how much spoiler to deploy, and when? Do you adjust the spoiler setting between the stops (between ARM and FLT, for example) or do you always advance it to the flight position if you need it at all? I know that there are guidelines for flap schedules but I haven't seen anything about spoiler schedules, so I assume pilots use them entirely at their discretion (?).
Also, in my sim I use spoilers mainly to slow down or to improve my rate of descent. Are there other clever uses of spoilers that I haven't discovered?