THE ACFT CRASHED AND BURNED DURING A GO-AROUND AFTER TOUCHING DOWN ON THE RWY AT ABOUT THE 1500 FT POINT ON A 3000 FT RWY. THE RIGHT PROPELLER WAS FEATHERED. THE PILOT WAS ATTEMPTING A SINGLE ENGINE PRACTICE LANDING AND BELIEVED HE COULD NOT STOP ON THE RWY SO HE TRIED A SINGLE ENGINE GO-AROUND. THE ACFT CLIMBED TO ABOUT 100 FT AGL BEFORE SETTLING TO THE GROUND WHERE IT CAUGHT FIRE ABOUT 1/2 MILE TO THE RIGHT OF THE EXTENDED CENTERLINE. THE FEDERAL AVIATION ADMINISTRATION FLT TRAINING HANDBOOK STATES THAT SIMULATED ENGINE OUT PRACTICE AT LOW ALT. SHOULD BE ACCOMPLISHED BY REDUCING POWER TO ZERO THRUST. THE OPERATORS HANDBOOK STATES THAT IF A SINGLE ENG. GO-AROUND IS ABSOLUTELY NECESSARY IT SHOULD BE DONE AT AIRSPEEDS OF 105 OR MORE, ENG. RPM AT 2625 AND FULL THROTTLE. THE FLAPS AND LANDING GEAR SHOULD BE RETRACTED. THE HANDBOOK ALSO STATES THAT A NORMAL LANDING WITH 35 DEGREES OF FLAPS ON HARD SURFACE WITH NO WIND AND MAX BRAKING WILL HAVE A GROUND ROLL OF 582 FT AT 5300# GROSS WEIGHT AT 103 MPH.