After a suggestion from a tea-friend, I tried this today at a lower than usual temperature, 145 degrees, increasing to 160 degrees over the course of the session with about 6 infusions. It was lovely lovely lovely.
(about 1 g tea per oz water, 5 grams in 150 mL kyusu, tap water, infusions about 30", 15", 30", 45", 1 min, 2 min).