I point my stuff down, but there isn’t enough to do a full fledged tuck. I usually use a lightweight panty girdle over my panties. If I’m wearing tummy control pantyhose or tights, these can serve the same purpose as the panty girdle. I have some pantyhose that are a little loose on the waist so I need to put the panty girdle on top to keep the pantyhose from falling down.
When I’m wearing a bathing suit, I have a special g-string gaff with an extra piece of elastic running vertically to keep me looking like I have feminine equipment.