The US coach training was done in 2010, before the revised Moves were introduced. Every PSA and USFSA educational seminar/workshop I attended for over a year included a review of the moves with teaching techniques.
The Eights were addressed, but the main concerns were learning all the steps and teaching the loops and twizzles for the other patterns. At all of them, the leaders specified that the skaters were not expected to demonstrate the precision that was Compulsory Figures. (Things like clean centers, overlaid tracings and even lobes weren't going to be as picayune as Figures.)
The biggest bit of confusion is on the circle sizes. Each circle (not the entire pattern width) is supposed to be three times the skater's height in diameter. It's not in writing for the Waltz Eight, so only coaches who did Figures are "in the know."