People still almost certainly fudged, because 3d6 will only produce one 18 in 216 rolls. So you need to roll up 37 PCs roughly to get a single 18. 17s are twice as common, and 16s about 3x more common than that, but until you get into the 100's of PCs rolled up you are really unlikely to get even 2 ability scores of 17 and higher. You'd probably have a couple of characters with 2 16s, or a 16 and a 17. at 100 characters. You have to get into the 10's of thousands to be likely to have a character with 3 stats above 16. I wrote a code on my C64 to do it, even with 100k full PC rolls I only got 2 characters with double 18s IIRC (sorting all the results was the hardest problem).At my table, you couldn't roll by yourself. Someone had to witness the rolls. You could retire a character if the rolls sucked (they went off to become a farmer). We used 3d6 and you could pretty much keep rolling until you got a keeper or someone would witness for you(which wasn't very long for 15 to 17 year olds) . It was expected that you would have at least one 18, or a couple 16 and 17, but you probably had one to two very bad rolls. Don't remember if we ever implemented the 4d6 because I let them retire undesirable characters, I do think I let them pick where they wanted to put the rolls.