I have the same situation for my pool. I used a cable/winch around the pool, then spaced eye screws every several feet on the deck, through a grommet in the cover, and fed the cable through each eye. I also used cement filled 5 gallon buckets on the cover where the deck ends on each side to hold down the cover where the cable drops down below the top rails again. On the outside I hung a few water filled bleach bottles as well. Seems to be doing the trick so far. We have had some very windy weather here in eastern PA lately and it is working pretty well. I have some wind getting under the cover on the outer side where the bottles are hung, but its better than the clips I used last year. I have also heard using screws and washers to screw down cover at several grommets into the deck. I have not tried that, but it seems like it would work. Obviously both of these methods put a few holes in the deck, which you may not like.