I have been looking for a trailer for my kayak. The thought of putting a wet and/or sandy kayak on the roof of my new car seems to be asking for trouble (salt+paint=grief). The trailer in your post looks alot like the one that harborfreight sells for about $210, including shipping. Cheaper than a paint job, and not much more than a quality roof rack. An added benefit is not having to lift my boat solo onto the top of the minivan.

My question has to do with the length of the trailer, including the tongue. I am trying to figure out how much of my 17.5' long boat will stick out the back of the trailer. Let's see, with an 8' bed length and about 2' ahead of the bed, that leaves 7.5' sticking out the back. A big red flag on the stern might just do it - if I have the 2' ahead of the bed. Your help with the measurements would be appreciated.