Two days dickin' around and nothing.

The problem here is not the mountain part, it's the jack part. I can't see the mountain jack as being a lumberjack. They scan equally well, so call it what it is.

I favour the jack as being some sort of mule or donkey (and please don't tell me the differences. I've had them explained to me by ranchers, peasants, dictionaries and folks who know. I still don't--no offense.)

I think holler is a verb (not a noun referring to a 'hollar' or a song).

If anyone really nails it, someone please let me know if you'd be so kind. Thank you.