2. The only way you'll get a 195lbs person onto your shoulder with one arm is if you bend down, wrap your arm around their waist, and stand up, or some variation on that - basically, getting your shoulder under their center of gravity and using your back to lift, or possibly using momentum to swing them around.
3. Like it's been said, grabbing someone who's standing up and throwing them over a shoulder or even lifting them above your head is a lot easier than picking up the same amount of dead weight up from the ground.