Cyberyeti, on 2020-May-09, 03:19, said:
One of the better players in my area has long championed this type of bid, it's not crazy, and particularly against not great opps you will be playing 4♥ rather than defending 4♠ much more of the time if you get there in one go.
4H looks a fair shot in third position. Good chance of unexpected Heart tricks if opponents bid 4S. It could be awful but I'd bid it at pairs or if behind in a match.