December was good, January was terrible, February shaping up to be decent but the snow adds some labor. It's never not a lot of work though if you want a good surface. You have to be a little crazy to keep it going in this climate.
With respect to skating time, it all depends on how cold it is on the weekends. You can bring the rink through the week like a champ, but if it's 45-50 degrees on Saturday it can be all for naught. It pays off most when your guy can get out there after school on non-practice nights.