It’s a really nice course, good mix of singletrack and wider stuff. Went up onto the moors a couple of years back and had rocks and everything. Last year the whole place nearly flooded though and the course was truncated.
Which Mayhem do you mean btw? The riding’s much nicer imo than either Eastnor or Gatcombe Park. Bits of it are rooty, twisty technical and can be tricky in the wet, but there’s nothing intimidating on it.
I can’t see any reason why you shouldn’t singlespeed it. I’ve only ever soloed there and with gears, but you can singlespeed anything within reason, you may occasionally need to walk one or two bits when you’re tired.
In the big sense, it’s a really nice event. Just the right size. Nice atmosphere. Lots of trackside camping which is great for soloists. You’ll have a blast, it’s brilliant.