I built a fence a couple years ago. I used 4x4 posts which I planted 2-3 feet deep and cemented in. The fence panels I got are 6' high and 8' long. they were pre-built panels and it is a wood privacy fence. The fence uses 3 1x4 boards that the pickets attach to. I have 2 3" long screws in each 1x4 to hold it to the post. Every year in the winter we get a few times where winds get up to 50mph and it never fails, at least 1 or 2 panes get ripped out of the screws and land in the neighbors yard. the posts seem to be fine, its just the panels blow right off the posts. Is there anything I can do to help keep this from happening? I thought about adding 1 washer on the top and bottom 1x4 to give it a bit more surface area to hold... but I don't really want to do that, because I think that would look a little bad... Any help would be greatly appreciated!