Cleveland offer wedges at low tier levels. Your wedges are perhaps the most important clubs in your bag.
Practice punch and pitch with your highest degree wedge - the one with the least rated distance.
A set of three wedges is a must. Not one top player's bag has less than three wedges. Ideally 100/80/60 for Cleveland and 100/75/50 for Taylormade.
The flop has it's uses but is rarely needed in comparison to pitch. Using pitch you'll have far greater chance to hole out because of more control over ball flight and roll direction after upon landing.
Flop is a great option out of sand for a distance of 10-12 yrds that require a full flop with backspin - as a general rule add ten yrds to approach shots out of sand using a wedge.