I'm wondering whether it would be "worth it" to modify the swimming behavior, such that: A counselor who runs out of stamina will either drown (an insta-kill, as if Jason were pulling him or her under) or be required to float-in-place (lie on one's back) until his or her stamina regenerates. I raise the issue because it's a consideration a swimmer must deal with in real life. I suppose a further nuance would be counselors with a "fear" status activated would be more likely to "cramp" (the swimmer's near-equivalent of a runner "tripping")...
...But I'm more concerned with why a lack of stamina -wouldn't- make a counselor drown. (Or at least need to float on one's back until stamina is restored to a certain amount.)