The correct answer seems to be number four - not enough. It both suits grammatically, and sentence-wisely.
I would not describe being submerged in a mud bath as gently floating on top because theirs mud under you and theirs mud all over top of you. You’re kind of just stuck in the middle, i’d feel more stuck then gently floating on top.
Not all traditions are safe and entertaining, some can be harmful. Like walking on fire :)
Gd luck :)