Prodigy P2 or P3 only would be my recommendation.
Phil, how long is your 5th wheel nose to tail? 36' is getting some length to it, but keep in mind a 26' camper model (this is the box measurement) will measure 29-30' OAL (tongue to back of rear bumper). Our 28' is 31.5' OAL. Throw on some bike racks or the slide racks OEM's are installing and it's an easy 5' over the unit model length. This is not all that bad pulling with a full size truck and bumper. A single cab short bed wheel base would not be my first choice no matter what capacity, but a CC 6.5' or 8' bed, if setup correctly, should not be an issue out to 38' or so. A 5th wheel or goose will always be a better towing experience no matter what length.
I agree on the wind. It's all situational. A cross-wind is different than a head wind and the suck/push of a semi at 65mph in 3 lane traffic is different than the other 2. The great thing about the Equalizer is the 4pt contact which means built in sway. No extra sway bars needed, or to forget to hook-up. If you ever find yourself in a sway situation, it will continue to get worse until you correct it. You correct it by hitting the trailer brakes only and slightly accelerating to "lengthen" the setup out. If you brake the tow vehicle it gets worse, completely opposite of what your brain tells you to do.
P-rated tires on fullsize trucks is BS if you ask me, LT's or nothing. The lower ply #/softer wall makes towing with P-rated tires "squirmy". Anytime you go from P-rated to LT you will notice a ride and towing difference. As long as you keep the load range (C,D, E) consistent between the two, the ride does not suffer much at all. The improved towing feel is phenomenal. One thing I did with my 2001 2500 was keep all 4 corners aired down to 60psi for improved unloaded ride. Then when towing, air up to 80psi in the rear (or to whatever your door jamb says is nominal - never inflate to max psi range noted on the tire). These were E range tires though. Not recommended for C or D range.
Damn, is it camping season yet?!?:smiley_cheers: