How much air should be used to inflate the top ring?
Do not over inflate or use high-pressure air compressors. Inflate top ring to be slightly stiff to the touch. An over-inflated ring heated by the sun may burst or lead to leaks in the seam. Pay attention to air temperature variation! In cold ambient temperature the top ring will lose some pressure, air will contract. If this occurs, DO NOT add air since the air inside will expand again once the temperature rises. In hot weather, the air will expand. You MUST let some air out to prevent the top ring from failing due to excess internal pressure.
