Check out the Arvika line. www.arvika.ca
These units mount on the A-frame at the front of the TT. and hold the bikes over the LPG tanks. They make full solutions, but I actually installed the AFH2 which is a 2" receiver. We use it with a Thule Doubletrack rack, so we can also use the rack directly on our TV.
Clearance is tight on our unit, but I can make fairly tight corners without the rack interfering with the back of our SUV. If you have a pickup for your TV, probably wouldn't be an issue as it is probably high enough to clear the tailgate.
Stromberg Carlson also makes a unit called the Bike Bunk (available on amazon) but we passed on it as the reviews were pretty poor. The Arvika is really solid and well made and installed fairly easily.