You might consider carrying them over the tongue. I have an Arvika 2" receiver mounted up over the propane tanks, and just under the bed platform. We use a Thule crosstrack rack to carry two bikes.
I do suggest tying down the front of the rack to the front of the tongue with a web strap in while in transit. It greatly reduces the whipping/bouncing of the bikes over bumps.
Hard to tell from the photo, but the bikes are attached to the HTT not the TV here: