A bike trailer/kayak cart combination

I am looking to get a trailer for my (cyclocross) bike to carry one or two of my 17 foot kayaks and to work as a hand cart for the boats as well.

Any ideas?

Thanks.

Kayak/Bicycle Trailer
The Buyers’ Guide Accessories has “leads” to several such trailers.

Archives
I remember someone had photos of their homemade kayak cart for their bike. I believe it was in the suggestions forum.

Bike/kayak trailers
Check out these sites:

www.bikesatwork.com

www.tonystrailers.com