If you're having problems hitting your standard 4 iron you should switch to a #9 fairway wood, it has the ability to hit the ball with height, forgiveness, and distance.
• The nine wood is a great choice to replace a 4 iron or 4 hybrid. It has a larger head than a hybrid which for some golfers, it will give them more convenience at the address position. With about 26 degrees of loft, it provides more loft than a 7 wood, which typically has only about 22 degrees of loft. The additional loft makes it easier to hit the ball high even off a tight lie; it’s also very effective from difficult lies like tall grass. In fact, most golfers can hit their 9 wood from the fairway or the rough with enough height and forgiveness, which is not always the case with their 7 wood.
• The club-length of a #9 fairway wood is about 1 inch shorter than a 7 wood, making it much easier to consistently hit the sweet spot.
• The #9 wood will have about 10 more grams of sole head-weight compared to a 7 wood. This additional sole weight will help you in two ways; getting the ball up quicker off the fairway or out of a fairway bunker.
A 9 wood is ideal for golfers who have a sweeping swing, and is a very good choice if you have a shanking problem with standard irons.