Land or Sky

Create a large gesture by writing your love in the sky or on the land. Hire a skywriter to literally declare your love in the clouds. Take your girlfriend for a hike or picnic lunch and when the airplane flies overhead, point it out to her if she does not notice immediately. Once she reads the message present the ring and give your prepared speech about how much she means to you and reiterate, "Will you marry me?" Or you could plan a hot air balloon ride that goes past a billboard or beach where you have left the proposal message to her. You will need to check if companies in your area perform these services. This will be an expensive option.