Cruising Sailors Forum Archive
They still make the fender board kits: 
In Response To: Any clever ideas out there for a backup for plastic fenders? ()
() 2x6 of treated lumber (unless you must have something more elegant);^)))) Taylor maid (or maybe tailor made)...
A couple of these, then replace the 2x6 treated lumber as needed. If you want, you can use two fenders between the hull and the "boards".
http://www.boatersland.com/tay96011.html?gclid=CJnq1-3pp8wCFUEkhgodm7UGTQ
Sounds just right!! 