PatH
Contributor
In moderate cold water... (>~35F) freeze up is rarely a problem with todays high end regulators. Below 35 you should probably be orally inflating your wing anyway as your inflator is the most likely item to freeze up if you use the power inflator.mania:Diving in the cold water. The work put on the primary 1st stage is heavier that the back up. That may lead to freezing the primary stage. OK I know it's rare, that mostly 2nd stages get frozen but it may happen. So maybe it's better to put less work on the primary stage?