Triscombe Stone car park is the place to park. Loads of trails from there.
Across the road from the carpark there is a barrier along side the banked line of trees. Go under that and at various points along the path that runs alongside the bank there are runs dropping off to the left.
My favourite is the one marked as “natural downhill trail-do not build jumps etc”. Steep in places, rooty and great fun and no dodgy jumps, at least not when i was there last!!
The FC are pretty tolerant as long as jumps aren’t built.
When were you planning on going? At a loose end this week before i start a new job next week and i was thinking of going for a play on those runs.
Would be happy to show you the ones i know.