Yes, you can sleep on your boat in Lake Havasu. There are a few things to keep in mind, though. First, make sure you have a comfortable place to sleep. An air mattress or camping cot will do nicely. Second, be sure to anchor your boat so it doesn't drift away while you're sleeping. Third, be aware of the weather conditions and dress accordingly. Finally, be mindful of any wildlife that might be present in the area and take precautions accordingly. With these things in mind, sleeping on your boat in Lake Havasu can be a great way to relax and enjoy the beautiful scenery.