I've got a nagging problem that I hope someone here can help with.

Our polaris cleaner keeps getting it's tail caught on the edge of the pool. It then shoots water out til the pump shuts off and then will dribble water out until the pool pump shuts off. It doesn't happen all the time, but this time it managed to aim at my new box of DE I left out. Plus, if I go on vacation, I have to turn it off... long story short, anybody got any ideas?

The edge of the pool is flagstone so there's a rough edge for it to catch on.

Thanks!!
-Melissa