I wish I could cold crash my beer before dry hopping as Denny suggests. My lagering keezere in in my basement. The only thing I will carry down the stairs now are kegs of beer for safety reasons. If I turned the walk-in cooler in my brewery down to 35 degrees, I would need take out a new mortgage on my house to pay the elctric bill!
For those reasons, I dry hop in the 60-65 degree range and it seems to work well for me.