Don't Forget Prop Walk
Depending on your motor, prop walk will come into play, and if the case, using both the tiller and the outboard handle are required to ease the boat out safely without whacking the pilings or another boat. Additionally, if your boat is subject to any cross winds on the freeboard, the extra control and power afforded by the outboard will make a big difference in overcoming the forces of the wind. Unfortunately, outboards are not great backing out machines, with possible exception of the new 4 strokers and the new Honda which touts releasing the exhaust bubbles above the prop thereby removing additional resistance to the operation. By the way, there is a device which cross mounts the outboard shaft to the rudder thereby allowing the tiller to move the motor in unison with one hand. The free hand can be used to wave to friends on the dock or wipe the sweat from your brow after a hairy exit. Chow.