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Martha's Vinyard: two runways in a T-pattern. GA landing on 15, up the stem of the T, commercials on 06/24 (along the top of the T). When I got there, there was one ahead already landed, still on runway 15, waiting to cross 06/24. Used to UK runway rules, just above the threshold I announced "runway occupied, going around".
ATC: "3,000 feet not enough for your 172? Get in there boy!"