If your booking request is declined for any reason, you can message the boat owner to see if they're open to alternative options. Typically owners will decline inquiries due to unavailability.
If you are more flexible with your dates, it may increase the chances that you and an owner can figure something out. You may also search for other options and submit inquiries to other owners.
Remember, there is no harm in submitting multiple inquiries when looking for your next on the water adventure! You can always view the status of your inquiries by visiting your Getmyboat inbox.