Those Cox plastic planes will not glide at all. They drop like a brick when the engine quits. Just keep it real low to the ground when the engine is ready to quit. If you like 1/2A's. The Brodak Series fly well. I have the Baby Flite Streak and Clown with Norvels. They will do the entire stunt pattern no problem on 42' lines and gliding is no problem.
Brodak is soon having an ARF Baby Clown. ALmost ready to fly. U could probably have htat one together in an hour and it would fly wayyyy better then the cox