I like to cold crash towards the end of my dry hop to help settle everything out. The colder the temp, the slower the hop goodness infuses with the beer so keep that in mind when planning the dry hop.
I do a 1 week dry hop, first 5 days at fermentation temperature, then the last 2 days my carboys are spent cold crashing, then into the keg from there. Weather that is "correct" or not, I don't know, but I get tasty results, and clear beer!