It might help that I only rode Mine Blower once, in the front row and on a practically empty train, but I don’t remember it being particularly rough, personally. To be honest, it seemed relatively smooth compared to other woodies I’ve done! As I’ve expressed numerous times, I do not have an especially high roughness tolerance, but I don’t personally remember Mine Blower being unbearably rough by any means.I can't help but point out the fact that although you say you much prefer smoother rides and don't really tolerate rougher rides, Mine Blower is in your top 10.
My relative lack of experience with woodies might not help here, but I’d probably say it’s up there as one of the smoothest I’ve done, possibly just being pipped to the post by Wicker Man.
It may have ranked lower had I ridden it towards the back, however...