I still have a few setups from 1970's era Santa Cruz, GS Fiberflex, Krypto, Z-Flex etc. One day my boys were out tearing up the small hill in front of our house with my old decks as they often did. The 13 yo neighbor kid was on my door a few minutes later. He proceeded to lecture me on the value of my boards and how my old late 70's Kryptonics Foam core had become a bit of a holy grail for skateboard collectors thus I shouldn't let my little boys ride it or any of my old setups anymore. He then proceeded to show me some skateboard website not unlike RBUK where they talked up the good old days with these old sticks. Put them all away soon after that. One of these days I will get around to trading them off for some proper mtb stuff.