Doing a little math you were cutting grass for about 2 hours --- add that to being under the shed, it was more like 5 hours in the heat --- My Grass had got like yours from Rain and soil too wet to support the weight of the " o " turn mower without getting it buried in the mud.. Between Mommas and mine there is about 4 Acres --- I have learned to pick up the deck and knock the top off then another cut to shorten it some more.. When the Clippings dry do the finish cut and do not try to cut too much... I had a Dentist in Ruston that like you, Fell off his tractor -- the Bush Hog took his Right Hand but it could have been his life.. Glad you are well enough to go fishing again