I'm trying to do a beer like Firestone's Pivo Pils, which is a dry hopped lager. I'm wondering how/when they dry hop it? I am planning on lagering the beer for a long time (1 week per degree Plato, which in this case is 3 months) so if I dry hop during the diacityl rest, the hops will drop off a lot by the time the beer's ready. I'm wondering, then, if after the lagering period, I should let the beer come up to room temp, dry hop for a few days, then drop it back down before racking to a new keg to carbonate? How does one dry hop a lager?