It is not unreasonable to expect officials to attend some sort of teaching camp in the off-season to familiarize themselves with 3-man, then work 2-3 scrimmages in the preseason so you can show your proficiency.
I have more heartburn with brand new officials working 3-man in a preseason training environment when all they will be working is 2-man in their first season.
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A-hole formerly known as BNR
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