Even I would never describe either of those trails as GNARR, but I find them huge fun to ride and actually very different in character to the wooded singletrack at places like Whinlatter and Penmachno. I just get the feeling that bits of Thetford (and Sherwood too) are looked down on just because of where they are, and if they were in a trail centre somewhere more ‘MTBcentric’ they would be raved about.
But then I grew up (MTB-wise) in twisty, flat, tight woodland so I guess my view might be a little skewed.
Plus, Bike Art often sucks a big one in terms of customer service.