I wish I knew how to bring up a previous related discussion, but on 11-06-10 there was kind of the same chat. My feelings are that the Towtektor system is the best system available for protecting a boat and trailer. It has the tendency to “stop and drop” rocks that the tires kick up. With the solid rubber units, they tend to riccochet off the flaps and then bounce up on the trailer/boat. jerr
As an after thought, I’d not recommend these for winter use as they fill up and freeze solid with slush and really get ugly looking- – not to mention the melted junk they drip on your garage floor if you don’t kick the “stuff” outta them before you drive in.