I'm in the "no honor scores for pre-bowling alone" group also. That one that the college bowler from New Castle, PA bowled shouldn't have been allowed when there were practically no witnesses and it wasn't even bowled in the center he was scheduled to bowl in that week. I'm impressed with the thought process and deeper analysis of this topic by many of you. It's not just blasting someone.
Now I'll say something a bit off the wall. The two legitimate 900's I know about aren't sanctioned. Glenn Allison's was turned down by ABC for non-complying lane conditions even though he was about the only bowler who did well that night on the pair and John Strausbaugh's was bowled in a non-sanctioned short-oil tournament in Columbia, PA across three pairs of lanes. Some of the other 900's are probably perfectly fine, but I've become less interested about hearing about them over the years.
I'm kind of embarrassed that an 889 was bowled on a condition I layed out, but it passed about 11 or 12 years years ago. I would have liked a post-score inspection of the lanes to make sure it was legit but that was in the era of pre-inspections already. That was Chad Steffy in State College, PA.(300-300-289)So close!