They have lots of sand and garvel already that’s why the trail gets blown out!! What they need is some ‘binder’ like clay or clayey soil to stick it all together
They do this already, as well as experimenting with all sort of surfacing on the new sections. All the rain + frost + traffic tears it up quickly so it’s a lot of work, even now the Monkey is getting a bit behind, the new reinforced end to the Tackeroo section is looking good though apparently.
A lot of it is just the amount of traffic they get though, more than the vast amount of Welsh/Scottish trail centers due to the positioning. It’s the nearest trail center for more people than anywhere else.
It’s mainly volunteer maintained by a small few people, as well as not getting the masses of tourism funding Scotland/Wales get.