Don's record in junior gold miner stock investing is not perfect. He's never, to my knowledge, claimed that. He has even mentioned some "failures" in the past. Since they were several years ago, those posts may not have been on this board. I suspect that, like most of us, he's happy with his successes and doesn't dwell on the ones that didn't work out.
His "skill" is knowing when to hold 'em and when to fold 'em. (Sorry Kenny.)
Dino