Hitting a flop shot off a tight lie requires that you attack the ball with a steeper swing and open clubface so that the club gets under the ball and pops it up softly
Hitting the ball with the sweet spot of the putter allows the putter face to stay square and not twist
Draw an umbrella in the sand and get your divots to start to the target side of the handle to stop falling back and trying to help the ball out of the bunker