By the way. No ponds please. I have fished one toddler out thanks :-((

we have a pond and a toddler and it is not a problem. Our pond is a 6 foot
diameter circle surrounded by slabs. We had a cover made my a local metal
worker (reasonably priced)which is strong enough to take my weight. It has a
padlocked trap door to give access and goes under the slabs. Once a year we
lift slabs and cover to clear out pond. Toddler, frogs, toads, birds,
dragonflies and fish all love it. Toddler currently "fishing" with stick and
having great time.
Hayley