1) Omaha, Ne HobbyPlex. Carpet
2) On Wednesday's we get around 30-35 entries in the summer. Winter racing on Sundays gets around 50 I think.
3) Right now Rubber TC 13.5 (switching to 17.5) and VTA is the most popular. Tamiya minis not far behind and has been the biggest class for a year or so. Mini's should pick back up once offroad season is done.
4) VTA and the switch to 17.5 in TC is probably the big talk now. GT10 starting and hasn't really taken off but may when the winter season begins or more concrete rules are in place. If lipo is left out the class is unlikely to grow.