I have a set of Longview slip-on tow mirrors from etrailer.com for my '14 RAM. They have a model for '16 Ford F150 as well - LVT-2300-C. These slip on really easy, don't block the puddle lights and are solid - no vibrations while driving. They've worked out well for about $70.
TT: 2015 Jay Flight SLX 195RB Baja Edition
TV: 2014 RAM 1500 Bighorn CC, 5.7L Hemi, 8-spd, 3.21LSD, Factory Air Ride/Tow Pkg, Andersen WD/SC