Jet skis everywhere with radio contact. Floatation vests. Even oxygen which gives them up to 8 breaths. Plenty of training too.
Still pushing the limits of human survival.
It makes me remember my first images as a kid of those amazing guys surfing waimea bay. They had huge boards, totally wrong for those type of waves. They didn't even have leg ropes. Every wipeout meant a swim in after. They were madmen.