3 options I have
We use the Tailgater and a long bike locking cable that we secure the Tailgater to the frame of the TT. If you are looking at getting a roof mount unit, you may want to think twice. The problem is when you get to your site and it is probably going to be shaded, you MAY not have a CLEAR shot to the SW sky (trees), to get your signal. We took a trip out west last year and a lot of the RV's had a roof mount and a ground dish, as they could not get a signal (under trees) and had to use the ground dish. The Tailgater is GREAT!!
Ah, but you may want to pick up your local Tv stations!! Ok, there is a product called Slingbox (slingbox.com) and this box connects to your home cable box and transmits the cable box output to your laptop/Smartphone/tablet... over the internet. We like watching the Ray's baseball games, so we mostly use the Slingbox. Allows us to also keep up with the hurricane status.
But you are encountering a POOR Wi-Fi Signal at the CG's. Ok, for product # 3, get yourself a Wi-Fi signal extender (Example -EnGenius High-Powered, Long-Range 2.4 GHz Wireless N300 Outdoor Client Bridge) which is a high power AP/Client Bridge unit. In easy terms, it amplifies the Wi-Fi signal from the CG's Access Point and it amplifies your laptop signal going to the CG's AP. Example: We were at a state park in Colorado, no Wi-Fi signal on the laptop. At the top of a hill a little over a mile away (in plain view) was a Home Depot store (yes - FREE Wi-Fi). Well since half of my dollars goes to Home Depot, I set up my EnGenius antenna (which is mounted on the ladder of the TT, see my albums for details) and was able to connect to their customer free Wi-Fi and have 4 bars. The signal was strong enough to watch the Rays game on our Slingbox, with no signal drops.
Of course the security of the Wi-Fi signals is only as good as the software you have protecting your computers so be careful. I use VPN back to my house computer (runs 24/7), which is an added layer of security, using a tunneling protocol.
Good Luck, as there will be many more GOOD suggestions.
2013 Jayco Eagle 284BHS
250Watt Grape Solar Panel, MorningStar MPPT 60 Charge Controller
1500 Watt Ramsond PSI, 2 Trojan T145 Batteries (260Ah)
2 - AirSight Wireless IP Cameras (used as rear view cameras)
EnGenius WI-FI extender, D-Link wireless (n) modem
MagicJack Internet Phone
2012 Ford F150XLT, EcoBoost w/3.73
157" Wheel base, HD Towing Package
Our Solar Album http://www.jaycoowners.com/album.php?albumid=329