The other option is getting lighter kayaks. I’m 70 and currently have 5 kayaks and a solo canoe in usage rotation. The heaviest (a 15’ plastic sea kayak) is 45 pounds and the others range from 24 pounds to 37 pounds. Three of the kayaks are folding models, a 24 pound 12’ Pakboat Puffin, a 27 pound 14’ Pakboat Quest and a 37 pound 15’ Feathercraft Wisper. You need not break down and then set up a folding kayak each time you use it. I generally set mine up in the Spring after keeping them stored in their duffel bags over the winter, then roof rack them for local trips. The lightest boat per foot of length is the 18’ long wood and nylon skin-on-frame which is only 31 pounds.
I have no trouble solo loading a boat under 40 pounds onto a roof rack, and even the 45 pounder is still tolerable since it is long enough for me to angle the bow up onto the rear rack and then lift and shove the stern forward.
Another advantage for us “old folks” of folding kayaks is that they can be checked as baggage on airline trips to take along on vacation, then be transported in the trunk of a rental car and stashed in your hotel room or rented cottage. I took the 12 footer to a cottage stay in England 3 years ago and paddled it with members of the canoe and kayak club in the small town I was staying in.
Personally, I wish that car makers had not shifted to building taller vehicles in recent decades, also so heavily marketing commercial sized trucks and “utility” style vehicles to people who really did not need something that massive. The ideal kayak and canoe hauling vehicle for me has always been either of my old school 1990’s Volvo station wagons. My 1992 Volvo 740 was just about ideal: steel rain gutters that securely handled a roof rack, long and flat roofline that was 56" above the ground which is about shoulder height for me, and secure attachment points beneath the steel bumper for hooking on bow and stern security lines. I did eventually get a Subaru Outback but the horizontally shorter roof line meant I did not have great clearance between the racks. I had a couple of Dodge Caravans, which required a small step ladder for securing my boats, but at least they took cheap rack set ups and were also long and flat.
The tall, wind tunnel curvature monstrosities that pass for “station wagons” today are a pain for boat hauling. I have a 2 kayak trailer and a light duty hitch on my Mazda CX5, but since I don’t have a driveway or garage on my property, wrangling the trailer in the dirt and gravel dead end alley 100’ below the back of my house means I rarely use it. If YOU have a driveway and place to park a trailer, I would strongly recommend that option. If you kayak frequently, you could just store the boats on the trailer during the season (taking precautions against UV exposure and oilcanning, but since you have cradles that should not be troublesome).
I am just curious, by the way. What is the utility of a pickup truck with a 5’ bed? Serious question.