If you guys recall, the last incident involved an ATV -- 4 wheels -- not a motorcycle. Mike doesn't own an ATV to my knowledge.
JOBE -- You didn't mention any details about where exactly the motorcycle tracks lead to.... Did you follow them right up to the motorcycle itself? or only to the turnoff to the Ranch from JF3? It would seem that you'd post these details.
WIZARD -- I see no evidence of a conspiracy going on here. Why make it into one? 2 incidents all year; Hundreds of motorcycles roaming the desert; Locals getting drunk at the springs. If I had to make a guess, I'd think it was some local idiots, not Mike.
It would be just as irresponsible for me to say positively that Mike DIDN'T do it as it is for YOU to say that he DID. There's NO conclusive EVIDENCE.