Actually that is incorrect. The stress's on the transom are still there. It takes the stress off the hyd rams from the tilt / trim.
FYI - If your motor is high enough to have the ground clearance under the skeg. There is less stress on the transom with the motor down. You eliminate that long fulcrum arm sticking out there.
That is the way I trailer my Flounder boat, but it has a jackplate on it and I run the motor all the way up on the jackplate.