You could get a keyed kill switch. I use both keyed cable and U locks. Lock it to heavy or fixed objects when possible. Use both locks. If you have a quick release front wheel take it with you if you can. Lock it up in open areas. A thief may know about a hidden place; then could work on the locks without being seen. Try to lock it up in a place where you can keep an eye on it. Limit the time to little as possible you must leave your bike unattended. Store your bike in your house or closed garage. Don't leave it locked up on your porch or yard. A thief may know the residents schedule.
Even with the best of precautions it could still be stolen. So know your serial number and take pictures of your bike. This way if it were found or seen somewhere you'll have evidence to recover your bike.
Land Rider Jerry