How to Avoid the Fat Bunker Shot
Learn to use the back edge of your sand wedge to get out of the bunker easier.
To stop chunking your bunker shots, you have to make the back edge of the clubhead enter the sand before the leading edge. Feel this with my drill. Find a level area in the sand and set up to a bunker rake. Open the clubface, which puts the back edge lower than the leading edge, and swing, skimming the club off the rake.