Re: Small boat trailer design w/light suspension, folding, good support?
I use the full length board on all of them. Sometimes you can spring the front up to get better support with rockered boats. To control point loading aft, I get the boat on the trailer then bring the roller up so it just kisses the keel. If the trailer had rollers down the middle a carpeted 2 x 4 fits neatly in those welded on brackets.
If you can move the axle a little then you can have the bow of the boat pretty close to the towing vehicle so you don't have quite such a long load.
Ran Tan, Leste Kuhling, Vernon Langille, Josef W., Merry Mouth, Imp, Macavity and a quiver of unamed 'yaks.
"Bound fast is boatless man."