learning your distance of each wedge is first then pitch an punch shots is the most important IMO 90% of my holed approach shots are made with pitch an punch shots,, yes flop is important also for when you have a really high elevated shot but thats all i think flops good for...
now are you one that likes to run the ball to the hole or likes to take risks with back up balls??
your odds of holing a shot are greater if you run ball to the hole you have 100% more control cause u can see the brake,, now with back up ball u have no control witch way ball will brake less its a green that slopes to hole.
why pitch shot over chipping,,,,, you have less brake on green to deal with
why punch shot over flop shot,,,,,IMO more control with punch..
playing wedges out of the rough say with no winds an on level grounds with full shot...
15 / 20 lie does not effect ya much give or take a 1 or 2 yrds....
20 / 25 give or take 2 or 3 yrds..
30 / 40 add 5 to 7 yrds...
40/50 add 10 to 15 yrds....
now don't forget this is with clubs i use an also every course plays different,, this is bout the best i can do for ya an hope it helps....
I know this is for wedges but may as well through in irons lol.
15/20 add 3 yrds
20/25 add 5 yrds
30/40 add 10 to 15 yrds
40/50 add 20 to 30
i may not be 100% right but i am where i am today using all this.....