LizzyIrv -
There has been A LOT of discussion on this topic. Since you are a Sponsor, you have full access to all of it. I would suggest that you use the Search tool on a term like "Adco" to bring up more than you wanted to know. You can start with this thread, and learn about the method for determining size.
http://www.trailmanorowners.com/foru...ead.php?t=2046
There are many other discussions.
Bill