I get your perspective, but I think 2 water rides near each other does work. My thought is, if it's hot and you're looking to get wet, the rides are in close proximity. When guests leave the area, they have time to start drying off before getting on many other attractions. If you have water rides all over the park, you introduce the wet aspect to guest who are trying to stay dry in more locations. That is, wet guests leave wet seats and such. Seems like a silly thing to consider for those of us who have experienced the heat down there, but that's not an all year issue, so I could see clustering water attractions.