Also note that (at least for my DC) if you sign up for a full, and then a second day as ANY (assuming B key, for A keys it would be if you signed up for a third day) it puts you in as an 8 hour shift.
So for us to get 60 we sign up for a full and an any. Otherwise if we do two fulls, they just randomly choose.
Also interesting note. My DC is now approving cross shift OT. Which is to say if you are A1 and ordinarily go to B1 as OT, they are letting you do your OT on B2 if you want instead. Kinda cool. If this goes really long like it could, come summer time I might just have to try A2. Overnights suck but 20 degrees cooler is nice.