NWMNMom, Most of the Doughboy ovals are expandable option. Meaning there are no straps. They use an L bracket on the bottom side of the side brace channel that backs up to an 8” x 8” x 16” block. The block is placed under the brace channel, up against the bracket. It’s a fun pool to build. Each side brace is set totally independent of the other braces. They are not connected by pressure plates or straps. It is all done with strings, a tape measure and laser level. Each brace goes through about a five or six point check before it can be backfilled and packed into place.

The Doughboy system has taught me that all oval pools can be converted to deep end pools. If you eliminate a bottom strap you just need to add an L bracket under the brace channel backed up against a very large block.

The straps prevent the pool sides from pushing out. A strapless design uses the downward pressure of the water on the pressure plates to hold a steel channel and bracket firmly positioned on a block that cannot move outward.

I have converted all kinds of pools, I am always amazed that it really does work. With enough weight down and a firm stopper under the brace it is all good.

Anyways, thanks all for the kind words. Anyone truly wanting to convert to an expandable pool please talk to me, one on one, before you do it.

Later, Dennis

P.S. Carl, I'll give yours a little thought and get back with ya.