Hi davidking,
Welcome to the Heartland Owners Forum and to the family. We have a great bunch of folks here with lots of information and all willing to share their knowledge when needed.
Some folks have purchased a universal trailer hitch and installed it, some have had a hitch custom made and installed to support a bike carrier. There are a few that made a carrier that was on the top of the pin box also. I'm sure some of our other members will jump in soon with some ideas that they have done also.
Be sure and check out our Heartland Owners Club. Join us at a rally when you can and meet lots of the great folks here and make friends for a lifetime.
Enjoy the forum and your new unit.
Jim M