I have had a few times where I have lost an engine on a trip. I usually have 2 engines n the boat so I can limp home on one engine. If you have a single engine boat, getting back to port could be a problem. Always make sure you have a generator on a single engine boat and also get a couple of electric trolling motors. If you lose the engine, fire up the generator and use the trolling motors to get to safety. It may not be a quick way of getting home but it sure beats paddling.