On several renders here and in the gallery, I notice that when people or objects are standing in or sitcking out of the water that there is an unrealistic border between the object and the water. The water usually has a nice texture / bump to it simulating a bit of turbulence or small waves but there is rarely any disturbance of that effect at the point where the water touches the object. I know that doing this accurately could be difficult, but I'm wondering if anyone has any tips on generating this effect...