Here on the wet coast, even in summer, it rains regularly. A previous blog showed how I dealt with ponding water on my winter cover using posts and plastic plates. This is the same approach applied to the summer cover, however here rather than plastic plates I used fiberglass. A panel of fiberglass was fabricated by doing a layup on melamine and then using a jig saw to cut it to shape. The actual piece of fiberglass I used was left over from a previous job, but you can see pictures of the technique used in my blog write up on making a new entry door.
On one side of the fiberglass plate I glued a square of carpet, somewhat larger than the fiberglass. This would prevent the hard edges of the fiberglass from chewing through the canvas cover. On the other side of the fiberglass I glued a block of wood with a hole in it using epoxy. The wooden hold up rod would go into the hole in the wooden block.