Any cub will float if you handle it wrong. Coming from flying a full scale one I can tell you what I see on the field.

Even tho I'm new I see a LOT of people that try to fly an approach or loose altitude nose down. Ever watch a full scale plane land? They don't nose over to loose altitude.

The way to loose altitude and speed at once is idle down AND keep the nose up a bit.

The reason the cub floats is if you point it the slightest at the ground it picks up speed - even the slightest speed will give that wing enough lift to float.

Bleed off airspeed in an approach by idling down, keep the nose up enough not to loose altitude - when you do that you loose speed. After you slow down you can start dropping the nose down a bit to start loosing altitude.

It's just like a full scale, you don't point it at the ground and idle down and expect to keep the same speed and loose altitude.