Unroll, clear line, and then I either inflate orally or with alternate air source. No need to pack it full. Air expands, remember as you go to shallower depths. I also have my buddy in contact to be certain I maintain my neutral buoyancy while inflating and deploying. Practicing this skill is important to doing it quickly, which is what minimizes the impact on the deployer's buoyancy.
DivemasterDennis
DivemasterDennis