Your comments about cleaning the CB on request seem reasonable to me. Thinking about it, I've never seen an official refuse to clean a CB when requested either.
The situation with Bobby Hunter sounds interesting. Was Bobby coming in after his opponent caught a skidder or was he at the table and made the shot anyway? That NEVER happens to me when I catch a skidder. I almost always miss by at least 1/2 a diamond.
Among other, one can have a bad contact on a straight-in shot - on a follow shot, the cue ball virtually climbs the object ball, and depending on the speed, bounces as well as loses some or all of the forward rotation it should have retained after contact.
Also, apart from missing, one may still (barely) make the ball on slight angle shots that aren't too sensitive, such as drag draws. Or, cutting with outside English might lead to a negligible undercut. Etc. & etc.
While I've missed too many balls due to a skid, I must have pocketed thousands that had one - happens more often than one might think…
I even remember one match, one of the most important of my competitive career, when I started to shoot most balls with what I call "roll-off" English (= the exact amount of outside English to avoid a bad contact, different depending upon angle and speed, a matter of feel) because the conditions were atrocious (should say in all fairness, they changed suddenly due to rain and a noticeable temperature drop). And the more the ref cleaned the balls with gloves, the more static they got, so it was hopeless…
Greetings from Switzerland, David.
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„J'ai gâché vingt ans de mes plus belles années au billard. Si c'était à refaire, je recommencerais.“ – Roger Conti