Objective: how to put air in car tires

Which of the following solutions is more sound in terms of naive physics reasoning?

Pick from: --Remove the cap from the tire valve, Use the air hose to add air in short bursts while check the pressure gauge (which is built in to most air hoses at gas stations). When desired pressure is reached ad an additional 20lbs then replace cap. --Remove the cap from the tire valve, Use the air hose to add air in short bursts while check the pressure gauge (which is built in to most air hoses at gas stations). When desired pressure is reached stop and replace cap..
Remove the cap from the tire valve, Use the air hose to add air in short bursts while check the pressure gauge (which is built in to most air hoses at gas stations). When desired pressure is reached stop and replace cap.