To keep a swimming pool cover from blowing off requires deep thought. It is a bit of a challenge to find answers and to give it a try.  Heavy rains, falling debris, strong winds, are only a few of the factors that may cause pool cover to blow off. So admit it, these factors are inevitable–can not prevent nor control. So what’s left to do is to find a solution.

One suggestion is to use some accessories that can help keep the pool cover to stay in place. By doing this, you will need materials like tracks, swimming pool vacuum, ropes, leaf nets, and weights. Also, to do the preventive measurement, here are some tips:

How to Keep Pool Cover from Blowing Off

Use a durable swimming pool cover that will surely stay in place. These are covers made from vinyl plastic, polypropylene, or the UV-stabilized polyethylene sheet, with the exact measurement of the swimming pool.

Put tracks on top of the swimming pool. Attach the pool cover to them. Secure the edge of the cover on trails to prevent it from blowing off.

Place a leaf net on top of the swimming pool cover.  It is to remove leaves and other elements on top of the cover more straightforward to prevent weighing down the pool cover from accumulated dirt on top. Make a regular schedule on removing the leaf net. Empty the net as possible. 

Only allow small amounts of water on top of the pool cover to help keep the cover to stay in place. Pump off the rest.

For additional preventive action, use weighted objects (sandbags or bricks). Tie the end of a long rope with it and the next end on the grommets on corners of the pool cover. Let the weighted object reach the ground and at the same time, pulls edges of the cover. 

Continue doing step #5 with equal spaces on the entire swimming pool. These weights can prevent the swimming pool cover from blowing off on a very windy day. 

Same applies with the above ground pool cover type. Only adds a few tips. Since they use cables and winch, a preliminary act of double-checking the attachment of cables and winch. That they should be appropriately secured and tight, replace old cables and winch if any. Moreover, to add additional protection, make use of pool clips along the railings of the swimming pool to help hold the cover tight. Then do the same as stated from step #3-#6.

Also, as an additional reminder on both swimming pool covers (above ground/in-ground) :

Always check the condition of the pool cover.  Repair or either replace the cover if it has found any rips or tears. Do not put any sharp objects on top of the pool cover. Sharp objects can easily break or damage pool covers. Have a regular visit on the pool area to see for yourself the situation and to be of peace that everything is okay. The pool cover is perfectly fine. That should be the primary goal.