Originally posted by: GagHalfrunt
1) Any properly hit iron is done with a descending blow. The term "sweeping" in a myth. Even sweepers catch the ball at the bottom of a descending arc and clip the grass. "Sweeper" vs "digger" is just a matter of degrees. They do about the same thing, it's just that the digger does it to a greater extreme.
2) Yes, but that happens naturally as you're closer to the ball. Don't try to make a steeper swing as you progress through the bag from 3-iron to wedge.
3) Until you're REALLY good you should concentrate on one single swing and use it exclusively. Unless you're a low single digit handicapper trying to invent a swing for rare situations is a recipe for failure. Don't try any swing unless you have a reasonable expectation of success and that's not going to happen unless you practice it before getting out on the course. That being said, YES, good players will often change their swing plane to fit the shot. Sometimes you want a high fade, sometime a low draw, etc etc etc. That's something you should work on at the range, but only after you're very consistent with your normal swing. If the swing you make 99% of the time isn't very reliable the one you use rarely will always fail.