Has worked for our grandkids on their trampoline.  You will have to drain it off when you get rain -- they usually just use a non-sharp pole to push up in the center so the water will run off (luckily we live in AZ where rain is not a big problem).  So far the heat has not caused any cracking or holes in it.  It does provide adequate shade for the kids to use their trampoline when they want.