I did 1-3-0 spike at the bend right above the little water pond, sold after the moab got almost to that first bridge, the put a 3-1-0 spike at the end. Worked aight but a little bit of rng
Why only give the moab 400% health when it could have been 10,000%! That would make the monotonous challenge even more monotonous and obviously that's more fun!
For a faster kill you can use x3x spike factory (130 or 032 both work) partway along the track (bottom right bend works) to pop the Moab and then sell it for 030 wizard for the insides