I have been so lucky to have had 4 HIO. 3 of them on hole nr. 4 on 2 different courses. 2 of the HIO's was played with at PRO V1 nr. 4. 2 of the HIO's was struck with a 4-iron. So no wonder I prefer a 4-iron and a Titleist 4 whenever I get to hole nr. 4 and it is a par 3 :-). Best wishes Poul