>>2044989In my class we were not taught non-equipment rescues, and definitely not taught to approach drowning victims from underwater. We were taught to approach them from behind and float them on the rescue tube while supporting them with our arms under their armpits, pic related.
For non-equipment rescues it is much the same. Approach from behind and do the cross-chest carry (essentially sidestroke while holding someone on your hip) to shore.
t. Lifeguard for 4+ years at a natural swimming area, ~50+ rescues