Go drive a Ford Ranger its only a little bigger that your Frontier and it is Well over qualified for the job.
It is by some margin the most capable Ranger Ford has made yet.
has depended on Rangers for delivering "5th wheel" Scamps for more than 25Years.
The 3.0L they used in the 90's and 00"s had about half the capability of the current 2.3L EB version.
The new Ranger is far more comfortable, efficient, and capable.
Mine has 1860# payload, 7500# tow weight
, and 750# tongue weight
Properly configured it can serve a couple or a family of four, for towing vacations or everyday driving.
I tow my Scamp13D (about 9000 miles so far) and it has been flawless with mileage in the low 20s.
The fiver may have a slight fuel penalty due to aerodynamics, but it will provide great control, power, and efficiency.
It is available as a SuperCab or a SuperCrew...
(love my SuperCab, but your needs may vary.)