Every pilot should try to get sideslipping into their flying 'skills base'. Sideslipping the Chipmunk helps with short strips if you're a tad hot or high and the power's off and full flap's down, but that lovely round-section rear fuselage is not that draggy when presented a bit sideways to the airflow, so the ROD isn't dramatically increased.
But last week I was flying a friend's non-flap Citabria, and finding myseld a tad hot on short final, it was almost a reflex action to push rudder and slip the ship. She slips superbly, loads of added drag from that slab-sided fuselage, and we arrived over the numbers at the right height and speed.
There is a tendency when slipping to allow the nose to drop (as someone else said), which lets the speed build up, and you'll float past the end of the strip. You will need to haul back a tad on the stick when slipping to prevent this - and like evrything else in flying, continued practice makes it second nature.
SSD