Corn cobs & old firewood

I once saw a video clip of a person that used dried corn cobs as a mushroom plug.  They drilled holes in a log, then placed the tip of the cob over the hole, and struck the cob, mashing it into the hole.  They did this a few times until the hole was full.  I assume the cobs were innoculated with spore as I've seen with wooden dowels.  Does anyone here have experience wth this?  I've always just tossed my cobs back in the garden to decompose, but I have a pile of mostly oak firewood (no resinous woods) that's been covered and aged, but not rotten.  I'm thinking it might be nice to cultivate some mushrooms that can be dried for year 'round use this way.  

Doeas anyone here have experience with this?  

What mushrooms would be a good choice for drying?

Will 18" long logs work for this if I stack them log cabin style?

Am I missing something critical here with this idea?

Thanks in advance for your advice!

Bumping this back up to the top so hopefully some of the mushroom experts will see it.