Pick a new location every year. Centered around a site to visit. Example a bucket list site. This way people would be willing to travel to get to. Be very specific on the type of cars you want to attend. Pre registration is a plus with a pic of vehicle attending. Get a few historical cars to attend with pedigree and some popular people on the HAMB to attend. For example---Moriarity, Squirrel, or maybe Hot Rod Primer. New Location every year to keep it from being a local show. You want people to travel to this show. It would break up the normal hum drum that happens. Maybe a Friday Saturday show.