Players problem, not yours. Int of 6 is plenty to realize the following things:
Water feels good
Opponents feel bad
Breath gets rid of opponents
Breath gets rid of bad feelings
Ow, that hurt
I know! I'll go to the water to feel good
If the tactic can be spelled out in 3 easy steps, Int of 6 can handle it. Perhaps the players should rethink their own Int scores.