CE500, I was also doing a Multi rating in a Duchess around 1998. The examiner pulled the RH engine mixture to idle/cut-off on approach while I was under the hood at about 2000 feet. Took it down to about 300 agl feet (I had just dropped the gear, what a lot of drag) then he said go-around, missed approach, and kept his hand on the fuel valve. Once I cleaned her up we did climb, and anyway Florida is flat and sea level - just so long as you miss the beach front hotels. Restarted about 1000 ft AGL and continued flight test. What did I learn? If you followed the book even an old beat up Duchess will climb out on one at sea level, just. Oh and yes, I did pass. I had been pre - warned he might do this - seems it was his party piece, some students got it, others didn't. I guess it depended on the side of bed he got out of that day.