Just button the bottom 3 buttons of the shirt you are already wearing during those breezy trips. That's how I roll
My draw stroke doesn't change regardless of how I dress. Real easy...Thumb out slips under shirt and sticks to my body hand goes up shirt riding thumb till i've cleared my weapon thumb still in contact with body and slides down behind grip wrap fingers around grip draw and present. as long as your thumb stays in contact with your body your shirt can't get hung up. no need for the two hand grab shirt pull up and find the gun with the other hand stuff.