I suppose that having no Friday classes helps for me.
Seriously, though, to get the job done, I trim back on other things. I may skip a sub opportunity for WUSC, or miss a meal at Preston dining. By putting the cuts in the stuff other than academics, it lets me do everything just about right for academics.
I'm betting on a vastly improved spring over last year, between taking 15 hours (as opposed to 16--darn lab sciences) and having some simpler classes.