How to haul my boat on top my truck!
 

I have a old (1978) chrysler boat, 15.5 feet. I have seen a couple trucks around with their boat on top of their truck while towing a holiday trailer. I was thinking of doing the same. I already have a winch on the front of my truck I can use and currently have a quad deck on the truck. I was thinking of either beefing up the back of the quad deck to hold the boat trailer or have the deck legs removable so I can replace the deck with the boat mount.
Has anyone ever seen what I am talking about? I am looking for suggestions or a web site of someone who has done this?

Thanks,
Brad.