Excavation will start on my pool next week (I hope). I am planning a 6x9, 10" deep tanning ledge in the pool. I have small children (1-2yrs) and would like a water feature to keep them interested. My builder suggests just bringing up a 1/2" return in the center of the ledge and drilling a couple of holes in the cap to create a fountain. Any suggestions out there? I've seen commercial products, but they seem to be targeted at shallower water levels.