My solution to hull cradels was to find some throw-away construction site 10 inch PVC pipe.

I cut out two lengths about 12 inches long and then cut those in half along their center lines.

I then put the four halves in the oven at a low temperature to make them pliable. (WHen heated they get rubbery.) While those were heating, I left then house and turned the boat upside down on the lawn.

After a bit, my wife came out a bit unhappy with my use of her cooky sheets and oven.

I waited until I thought both the cradles and the wife were hot enough and then simply layed them on the underside of the upside down boat and let the cool.

As they cooled they easily conformed to the shape of the hull.

After they were cool, I cut slits in the cradels perpendicular to their center line to recieve some large hose clamps. Then I glued a bit of carpet on to the cradles for padding and attahced them to the trailer support arms where the hulls sit.

Cheap (aka free), easy and they continue to work great.... after lots of miles and many seasons of sitting in the sun and being in and out of fresh and salt water....or being covered with snow as they now are.

Bummer..... Is it Spring yet..?