When the engine dies, you make a relatively normal approach and flair out... and let it slide in on the belly.

Carry a roll of clear packing tape and apply a layer or tow to the belly. Each landing check how much has been worn through. If you land in soft grass... little or none. If you land in sharp rocks you can take the belly out of the airplane. Pavement tends to wear through 1 layer of tape.

BTW... Find out the prop range for your engine. Ifyou want maximum aerobatics... you will want to use the long low pitch prop. If you want maximum speed you want the high pitch short prop... If you want a little of both then usse the ne in center of the range. Test fly it with the long low pitch. (safer for the airplane durring hand launch... it gives maximum accelleration and best climb rate)