Welcome to the forum. Your signals are very strong and in the same direction, about 300 degrees. You should try your C2 antenna indoors on one TV to see what you can get.
The C2 antenna is primarily for UHF channels 14-51, but you have 3 VHF channels on real channels 7, 9, & 13. Your C2 might also be able to pick them up. There is an antenna called the C2V that is designed to have some gain on VHF:
VHF 174 - 216 MHz (Channels 7-13)
UHF 470 - 806 MHz (Channels 14-69)
Max gain: 10.4 dBi UHF;3.1dBi VHF
Range: Up to 50 Miles
Gain of 10.2 dBi
Consistent gain through the entire UHF DTV channel spectrum
It is possible for you to connect (with a UVSJ) a simple VHF antenna to your C2 to pick up 7, 9, and 13 if your C2 doesn't get them.
We just moved to a new neighborhood and the HOA prohibits antennas
FCC regulations override HOA regulations in many cases to allow you to have an outdoor antenna.http://www.fcc.gov/guides/over-air-reception-devices-rule
should I be worried about my HOA and grounding the antenna?
You should be worried that your outdoor antenna is grounded to meet NEC regulations for electrical safety and to prevent your insurance company from rejecting a claim if anything bad happens.http://www.avsforum.com/t/1333059/grounding-antenna-and-dish
If you get the channels you want indoors on one set, then use a splitter to feed the other sets, If the splitter makes the signals too weak, add a distribution amp like the CM3414.
If you don't get what you want with an indoor antenna, maybe you have an attic.
If you still don't get what you want, then you will have to put your antenna outside using one designed for UHF and VHF-high like the RCA ANT751 or the Winegard HD 7694P.http://www.solidsignal.com/pview.asp?mc=03&p=ANT751&d=RCA-ANT751-1080p-HDTV-Outdoor-Antenna-(ANT751)&c=TV Antennas&sku=044476064524http://www.solidsignal.com/pview.asp?mc=03&p=HD7694P&d=Winegard-HD-7694P-High-Definition-VHFUHF-HDHD769-Series-TV-Antenna-(HD7694P)&c=TV Antennas&sku=