Does your RTT have load bars? If so, just get 1 (or 2) 100W panels and attach with z-brackets. I've had good luck with Rich Solar. Their customer service is awesome.
Gemini Bridges off of 191 just NW of Moab is a rough, non-technical trail that pays off with awesome views. Metal Masher is a 7/10 difficulty trail nearby if you want your metal mashed, heh.
I have the Trigger 6-shooter in my canopy camper and love it. There are 3 options for controlling switches: bluetooth through the app on your phone, a portable toggle switch panel, or via buttons on the unit itself. I've been using it for 2+ years with no regrets.
This is a deal-breaker for me, as I live in the midwest. My camper battery is a Battleborn 100Ah lithium and the battery's BMS will only safely accept a charge in temperatures as low as 26 degrees Fahrenheit. That's fine, as I don't winter camp — even with Battleborn's pricey optional heater...