Originally Posted by nez
Leave the car keys in the car when you leave the car in the garage on the spirit. Otherwise the alarm will continually go off as its triggered by the motion detectors which don't like being rocked on a boat. I learnt that from first hand experience.
Excuse the out of the blue 1st post...
FYI - The tilt alarm sensor can be switched off by pressing the lock button on your fob again, immediately after you've locked the car. Details under the Controls\Alarm System section in the Owner's Manual. I've travelled like this on the Spirit a number of times with no issues/alarms and with the confidence that my car remains locked at all times.