That is exactly what I'm worried about, safety for kids, swimmers. My lake is basically football shaped. I figured I would put the structure on each end, each of which are the more shallow areas of the lake anyway for spawining. The dock will be in the middle of the lake with the nearest underwater structure on each end roughly 100 ft away from the dock from each side. My kids, family and friends will all be aware that there is no swimming on the ends of the lake, I'm more worried about my kids friends, etc. There will be no boats on the lake, it is too small and you'll be able to fish the entire lake from the banks. I was thinking of putting "no swimming" signs near each area of structure.