Sosecure doesn't actually work very good. The problem isn't with the diaper though, it is with the small of your back. This area just above your back hips line, and right at the waist, is concave shaped. This makes it nearly impossible to get a good watertight seal, which in turn lets water in. By the time you get out of the pool you will be wearing an inflated fish bowl!
It took me a while to realize that trying to keep you pee and pool water separated simply does not work. I did find that using a swim diaper that has a small terry lining is the ideal balance for containment vs not absorbing or containing the pool.(actually pocket diapers but without the added liner). This is just enough to get you from the locker room to the pool without pee running down your legs.