I'm on Pinkbike frequently and recently I was contacted by someone from the Trailforks team. Trailforks would like input and participation from FWMBA. The guy said he'd tried to reach out to the club but was turned down, which to me makes zero sense.
Trailforks is a crowd-sourced database for trails. All I've done with it is linked my Strava to my Trailforks profile through Pinkbike and it uploads my rides and keeps track of where I've ridden and in turn adds the trails I've done to its database. You can also add trail reports (open/closed/wet/tree down/etc) and even input trail work entries on there plus photos, videos, maps, etc.
If I look up Sansom on Trailforks, there is only Lone Wolf and Damn Drop listed--no whites or Jojos or anything like that, so that's an opportunity for the club to at least have the trails properly represented. For all the hard work the club puts in to build and maintain the trails, I don't see why you'd want to keep all that a secret.