Check the bottom of your trunks. Where the trailing edge touches the trunk that needs to be a nice smooth surface. Sometimes when the boats are new, whatever glue they use when they are putting everything together isn't properly removed. I didn't check this on a new Viper I had, and it mauled a set of boards in basically a day. I'm sure it's something that Dan would've taken care of, but easier things have been missed, or the board has worn a notch into the glass.

A small file is all you need to fix it. If the board has worn into the hull, just fill it in with epoxy, and file that to shape.