I hate to admit I've gotten in on one engine twice. once due to failed battery and once due to ethanol issues (water separator was clogged). I ran in at about 8-10 sm or 7-9 knots, just took my time, not in a big hurry was lucky to be only 10 miles out. little over an hour I'm in safe and I can address the issue on dry land instead of in a rocking and rolling ocean. As stated before tilt the one motor out of the way and don't push it. Remember, your still going in the right direction, but if that other motor quits, you have major issues. Just take your time, break out the sandwiches, sodas, etc to kill the time. most important thing is your life, and the lives of your crew. Do the smart thing. head in at slow, steady pace. if you are a good distance off shore, you might want to also alert the Coast guard, they will check with you every 30mins. Smart thing in case you lose second motor or all power. Can you get in on one motor. YES, can you plane on one motor probably but would not recommend it and is it that important to possibly damage one of your $20K outboards. your call here